Feat: Add Color Configuration (#82)

This MR adds the ability to customize colors for the discussion tree

lua/gitlab/init.lua

@@ -23,6 +23,7 @@ return {
     server.build() -- Builds the Go binary if it doesn't exist
     state.setPluginConfiguration() -- Sets configuration from `.gitlab.nvim` file
     state.merge_settings(args) -- Sets keymaps and other settings from setup function
+    require("gitlab.colors") -- Sets colors
     reviewer.init() -- Picks and initializes reviewer (default is Delta)
     u.has_reviewer(args.reviewer or "delta")
   end,