include i3 and nvim configuration in the central repository, rather than keep them in their seperate respective ones.

.config/nvim/lua/plugin/gruvbox.lua

@@ -0,0 +1,31 @@
+---@type LazySpec
+return { {
+	'ellisonleao/gruvbox.nvim',
+	lazy = false,
+	dependencies = { 'johnfrankmorgan/whitespace.nvim' },
+	priority = 1000,
+	---@type GruvboxConfig
+	opts = {
+		styles = {
+			comments = { italic = true }
+		}
+	},
+	config = function(_, opts)
+		local colour = require('gruvbox')
+		colour.setup(opts)
+		vim.cmd.colorscheme('gruvbox')
+		_G.userdat.palette = colour.palette
+
+		-- non-essential configuration should be put in here
+		Autocmd('VimEnter', {
+			callback =
+			    function()
+				    -- spell highlight must be grey
+				    for _, spell in pairs { 'SpellBad', 'SpellCap', 'SpellRare', 'SpellLocal' } do
+					    vim.api.nvim_set_hl(0, spell,
+						    { fg = nil, bg = nil, sp = _G.userdat.palette.gray, undercurl = true })
+				    end
+			    end
+		})
+	end
+} }