Modernizied structure of configure files

lua/plugins/colorscheme.lua

@@ -0,0 +1,11 @@
+return {
+            {
+                'ellisonleao/gruvbox.nvim',
+                lazy = false,
+                priority = 1000,
+                config = function()
+                    vim.cmd([[colorscheme gruvbox]])
+                end,
+                opts = { style = 'dark' }
+            },
+        } -- Main theme should be load during startup.