Add inlay hints support

[stevanmilic]

Hi!

Could we add specific highlighting for LspInlayHint? By default it's linked to NonText, but I think it's best to add background for it as well.

For now I've added custom highlighting:

require("onenord").setup({
    ...
	custom_highlights = {
		LspInlayHint = { fg = colors.light_gray, bg = colors.active },
		...,
     }
}

Which produces:

This looks nice, but we might wanna consider smth more in-line with the colorscheme.

Thanks for a great theme!

[rmehri01]

Hey there, sure, I can add it quickly and no problem, I'm glad you like the theme! 😄

[rmehri01]

I tried a few different things but I think I like what you have already. If you have something else in mind, let me know!

[stevanmilic]

nice! thanks a lot!