Add BlueHand Keyboard again

[DonPavlov]

Board/Shield Check-list

• [X ] This board/shield is tested working on real hardware
• Definitions follow the general style of other shields/boards upstream (Reference)
• .zmk.yml metadata file added
• Proper Copyright + License headers added to applicable files (Generally, we stick to "The ZMK Contributors" for copyrights to help avoid churn when files get edited)
• General consistent formatting of DeviceTree files
• Keymaps do not use deprecated key defines (Check using the upgrader tool)
• &pro_micro used in favor of &pro_micro_d/a if applicable
• If split, no name added for the right/peripheral half
• Kconfig.defconfig file correctly wraps all configuration in conditional on the shield symbol
• .conf file has optional extra features commented out
• Keyboard/PCB is part of a shipped group buy or is generally available in stock to purchase (OSH/personal projects without general availability should create a zmk-config repo instead)

[lesshonor]

I'm going to leave immediately-actionable suggestions in good faith and humor—but after a year and a half of silence and many attempts before that¹...I think the writing is on the wall and you should continue setting up that board module.

Should you keep this pull request open, you definitely need to install and run pre-commit on the files you're submitting to deal with formatting issues (tabs, trailing whitespace, etc). Squashing your commits before rebasing on main and rewriting the commit message so it adheres to Conventional Commit guidelines is also strongly encouraged.

Footnotes

1. Not sure if this macropad was redesigned or if it should always have been submitted as a board. ↩

[lesshonor]

Per Zephyr docs, the format here should be "manufacturer,product".

Yes, some boards appear to have gotten this wrong and some may have tried to get "cute" (though nice is reasonably-arguable as a manufacturer alias for "nice keyboards") ...but blue isn't jpconstantineau's company name and "bluehand" is the full name of the board. I'd either use his handle or (per this suggestion) just leave it unprefixed.

Suggested change

	compatible = "blue,hand";
	compatible = "bluehand";

[lesshonor]

This property has been deprecated. But you'll want to add wakeup-source so keypresses can wake the board from deep sleep (see a8a0d27).

Suggested change

	label = "KSCAN";
	wakeup-source;

[lesshonor]

Update per 506c3b0.

Suggested change

	include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
	include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
	include(${ZEPHYR_BASE}/boards/common/uf2.board.cmake)

[lesshonor]

This is a better fit here, I think.

Suggested change

	CONFIG_FLASH_MAP=y
	CONFIG_FLASH_MAP=y
	CONFIG_ZMK_USB=y
	CONFIG_ZMK_BLE=y

[lesshonor]

See previous comment.

Suggested change

	config ZMK_BLE
	default y
	config ZMK_USB
	default y