feat: add plugin catppuccin theme

lua/plugins/catppuccin.lua

@@ -0,0 +1,26 @@
+--
+-- Soothing pastel theme for Neovim.
+--
+-- Source: https://github.com/catppuccin/nvim
+-- ..............................................
+--
+-- Author: Sven Vogel
+-- Created: 24.11.2024
+-- Edited: 24.11.2024
+--
+-- ==============================================
+
+return {
+    {
+        "catppuccin/nvim",
+        name = "catppuccin",
+        priority = 1000,
+        config = function(opts)
+
+            require('catppuccin').setup(opts)
+
+            -- setup must be called before loading
+            vim.cmd.colorscheme "catppuccin"
+        end
+    }
+}