Move plugins to apt file, use consistent style, configure nvim-tree

lua/custom/plugins/init.lua

@@ -2,4 +2,15 @@
 --  I promise not to create any merge conflicts in this directory :)
 --
 -- See the kickstart.nvim README for more information
-return {}
+return {
+  -- gruvbox theme
+  {'morhetz/gruvbox', config = function() vim.cmd.colorscheme('gruvbox') end },
+  -- Noctis Theme
+  { 'talha-akram/noctis.nvim', name = 'noctis' },
+  -- Catppuccin theme
+  { 'catppuccin/nvim', name = 'catppuccin' },
+
+  -- nvim-tree
+  'nvim-tree/nvim-tree.lua',
+  'nvim-tree/nvim-web-devicons',
+}