Add more colorscheme and ability to switch

lua/utils/colorscheme.lua

@@ -0,0 +1,21 @@
+local M = {}
+
+-- List of installed colorschemes
+M.themes = { "tokyonight", "catppuccin", "gruvbox" }
+
+-- Picker function
+function M.pick()
+  vim.ui.select(M.themes, {
+    prompt = "Choose Colorscheme:",
+  }, function(choice)
+    if choice then
+      -- Load lazy plugin if needed
+      pcall(require, choice)
+
+      -- Apply the colorscheme
+      vim.cmd.colorscheme(choice)
+    end
+  end)
+end
+
+return M