Add option to connect leftmost and rightmost status line fields

[gerazov]

This is related to #67 - the solution there only works if you have modules only on the right (left) side. But if you have left and right modules you can't get both to extend to the edge of the terminal and have say round corners on the other side like you can have in Vim.

So you can either have the right module stick:

or the left module stick:

btw why is the blue in Neovim with catppuccin not the same with blue in tmux?

[vdbe]

Can you show your config?

As for the colors there was a mismatch in latte but the rest was correct.