feat: Adding a bunch of changes to move further towards a clean and more

builtin setup rather than relying upon plugins.

nvim/lua/plugins/gruvbox.lua

@@ -0,0 +1,8 @@
+vim.pack.add({
+    'https://github.com/sainnhe/gruvbox-material',
+})
+
+vim.g.gruvbox_material_enable_italic = true
+vim.g.gruvbox_material_background = 'hard'
+vim.g.gruvbox_material_better_performance = 1
+vim.cmd.colorscheme('gruvbox-material')