Support registering icons via flat config file (icons.json?)

[cbirdsong]

When adding custom icons, ot would be great if you didn't have to jump through the hoops of registering a script and adding a filter and could just creating a flat file that looked like this:

{
  "version": 1,
  "iconTypes": [
    {
      "isDefault": false,
      "type": "example-icons",
      "title": "Example Icons"
    }
  ],
  "iconCategories": [
    {
      "name": "category-one",
      "title": "Category One"
    },
    {
      "name": "category-two",
      "title": "Category Two"
    }
  ],
  "icons": [
    {
      "isDefault": true,
      "name": "bookmark",
      "title": "Bookmark",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M15.5,4.25 L9, 4.25 C7.48121644, 4.25 6.25, 5.48121644 6.25, 7 L6.25, 19.5 L6.25678483, 19.6039817 C6.33269168, 20.17682 7.02861659, 20.4632798 7.48809353, 20.0694425 L12.25, 15.988 L17.0119065, 20.0694425 C17.4984115, 20.4864467 18.25, 20.1407649 18.25, 19.5 L18.25, 7 C18.25, 5.48120782 17.0188049, 4.25 15.5, 4.25 Z M15.5, 5.75 L15.6278083, 5.75645347 C16.2581415, 5.82046462 16.75, 6.3527795 16.75, 7 L16.75, 17.869 L12.7380935, 14.4305575 L12.63989, 14.3592262 C12.3667749, 14.1927863 12.0115663, 14.2165634 11.7619065, 14.4305575 L7.75, 17.868 L7.75, 7 C7.75, 6.30964356 8.30964356, 5.75 9, 5.75 L15.5, 5.75 Z'></path></svg>",
      "categories": [
        "category-one",
        "category-two"
      ]
    },
    {
      "name": "cloud",
      "title": "Cloud",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M12.0297869,6.25477399 C9.69310799, 6.35627347 7.76028359, 8.06517251 7.33640731, 10.3195752 L7.33, 10.357 L7.17131855, 10.3970995 C5.4791682, 10.8693286 4.25, 12.4228808 4.25, 14.25 C4.25, 16.4591229 6.04086573, 18.25 8.25, 18.25 L16.25, 18.25 C18.4591136, 18.25 20.25, 16.4591136 20.25, 14.25 L20.2449807, 14.0481533 C20.1583164, 12.3092839 18.9581728, 10.8518379 17.3286997, 10.3970993 L17.169, 10.357 L17.1636012, 10.3195631 C16.726443, 7.99471518 14.6845932, 6.25 12.25, 6.25 L12.0297869, 6.25477399 Z M12.25, 7.75 C14.1089517, 7.75 15.641164, 9.20368247 15.7444701, 11.050879 C15.7655051, 11.4270003 16.0622764, 11.7291586 16.4379585, 11.7569554 C17.7370378, 11.8530748 18.75, 12.9390845 18.75, 14.25 C18.75, 15.6306864 17.6306864, 16.75 16.25, 16.75 L8.25, 16.75 C6.86929499, 16.75 5.75, 15.6306979 5.75, 14.25 C5.75, 12.9390902 6.76297645, 11.8530752 8.06206149, 11.7569554 C8.43774872, 11.7291582 8.7345221, 11.4269924 8.7555506, 11.0508656 C8.85882307, 9.20368024 10.391028, 7.75 12.25, 7.75 Z'></path></svg>",
      "categories": [
        "category-one",
        "category-two"
      ]
    },
    {
      "name": "heart",
      "title": "Heart",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M6.08714334,6.32932979 C3.96268923, 8.06801188 3.63859886, 11.0218225 5.33411073, 13.1117301 L5.40693404, 13.189484 L11.735394, 19.050284 C12.0229467, 19.3165872 12.4670552, 19.3165879 12.7546087, 19.0502856 L19.0831087, 13.1894856 L19.1559241, 13.1117421 C20.8618901, 11.009037 20.5476544, 8.03670134 18.3950317, 6.32296945 L18.2021622, 6.17656493 C16.3839665, 4.86189789 14.0726771, 4.99410522 12.3732475, 6.33543793 L12.244, 6.441 L12.1137885, 6.33327648 C10.4051427, 4.9868485 8.07169216, 4.85041921 6.27728692, 6.18112693 L6.08714334, 6.32932979 Z M11.6855857, 7.98275475 C11.9837742, 8.31667652 12.5062017, 8.31668548 12.8044017, 7.98277393 C14.0606994, 6.57602557 16.0037503, 6.33654686 17.4607748, 7.49649577 L17.6164202, 7.627428 C18.9226437, 8.78850986 19.1174439, 10.620049 18.1123793, 12.0085048 L18.021, 12.127 L12.245, 17.477 L6.468, 12.127 L6.49897378, 12.1666936 C5.32705305, 10.7221704 5.54794474, 8.70892882 7.0371596, 7.49013516 C8.45843106, 6.32695371 10.4260915, 6.57232977 11.6855857, 7.98275475 Z'></path></svg>",
      "categories": [
        "category-one"
      ],
      "keywords": [
        "love"
      ]
    },
    {
      "name": "mail",
      "title": "Mail",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M17.5,5.25 C19.0188049, 5.25 20.25, 6.48120782 20.25, 8 L20.25, 8 L20.25, 16.5 C20.25, 18.0188136 19.0188136, 19.25 17.5, 19.25 L17.5, 19.25 L7, 19.25 C5.48120782, 19.25 4.25, 18.0188049 4.25, 16.5 L4.25, 16.5 L4.25, 8 C4.25, 6.48121644 5.48121644, 5.25 7, 5.25 L7, 5.25 Z M18.7288492, 7.76980088 L12.7469304, 13.0617474 C12.4915617, 13.2876505 12.1206612, 13.3102408 11.8421862, 13.1295183 L11.7530696, 13.0617474 L5.77115144, 7.76980412 C5.75726181, 7.84441732 5.75, 7.92136061 5.75, 8 L5.75, 8 L5.75, 16.5 C5.75, 17.1903743 6.30963146, 17.75 7, 17.75 L7, 17.75 L17.5, 17.75 C18.1903864, 17.75 18.75, 17.1903864 18.75, 16.5 L18.75, 16.5 L18.75, 8 C18.75, 7.92135923 18.7427384, 7.84441487 18.7288492, 7.76980088 Z M17.5, 6.75 L7, 6.75 C6.96190904, 6.75 6.92421603, 6.75170376 6.886993, 6.75503923 L12.249, 11.499 L17.612, 6.755 L17.5, 6.75 Z'></path></svg>",
      "categories": [
        "category-one"
      ]
    },
    {
      "name": "search",
      "title": "Search",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M11.25,4.25 C15.116007, 4.25 18.25, 7.3839999 18.25, 11.25 C18.25, 12.9128461 17.670205, 14.4402654 16.7017462, 15.6411267 L20.0303301, 18.9696699 C20.3232233, 19.2625631 20.3232233, 19.7374369 20.0303301, 20.0303301 C19.7640635, 20.2965966 19.3473998, 20.3208027 19.0537883, 20.1029482 L18.9696699, 20.0303301 L15.6411267, 16.7017462 C14.4402654, 17.670205 12.9128461, 18.25 11.25, 18.25 C7.3839999, 18.25 4.25, 15.116007 4.25, 11.25 C4.25, 7.38400644 7.38400644, 4.25 11.25, 4.25 Z M11.25, 5.75 C8.21243356, 5.75 5.75, 8.21243356 5.75, 11.25 C5.75, 14.2875792 8.21242628, 16.75 11.25, 16.75 C14.2875864, 16.75 16.75, 14.2875864 16.75, 11.25 C16.75, 8.21242628 14.2875792, 5.75 11.25, 5.75 Z'></path></svg>",
      "categories": [
        "category-two"
      ]
    },
    {
      "isDefault": true,
      "name": "user",
      "title": "User",
      "icon": "<svg width='24px' height='24px' viewBox='0 0 24 24'><path d='M11.800508, 4.25 C9.59136901, 4.25 7.800508, 6.040861 7.800508, 8.25 C7.800508, 10.459139 9.59136901, 12.25 11.800508, 12.25 C14.009647, 12.25 15.800508, 10.459139 15.800508, 8.25 C15.800508, 6.040861 14.009647, 4.25 11.800508, 4.25 Z M11.800508, 5.75 C13.1812199, 5.75 14.300508, 6.86928813 14.300508, 8.25 C14.300508, 9.63071187 13.1812199, 10.75 11.800508, 10.75 C10.4197961, 10.75 9.300508, 9.63071187 9.300508, 8.25 C9.300508, 6.86928813 10.4197961, 5.75 11.800508, 5.75 Z M11.800508, 13.5 C8.04670918, 13.5 5.68353852, 14.9106243 4.49655562, 17.1581489 C3.69148307, 18.6824832 4.93973466, 20.25 6.648008, 20.25 L16.953008, 20.25 C18.6612415, 20.25 19.9094839, 18.6825146 19.1045145, 17.1581755 C17.917388, 14.9105796 15.5542922, 13.5 11.800508, 13.5 Z M11.800508, 15 C15.00061, 15 16.8519251, 16.1050874 17.7781285, 17.8586756 C18.0005848, 18.2799324 17.6262539, 18.75 16.953008, 18.75 L6.648008, 18.75 C5.97474208, 18.75 5.60043156, 18.2799521 5.82293547, 17.8586605 C6.74903109, 16.1051199 8.60040067, 15 11.800508, 15 Z'></path></svg>",
      "categories": [
        "category-two"
      ]
    }
  ]
}

[ndiego]

Yeah definitely agree. No ETA, but I'll explore this.