added nvim lua config files

defaults/nvim/lua/plugins/catppuccin.lua

@@ -0,0 +1,18 @@
+return {
+  {
+    "catppuccin/nvim",
+    name = "catppuccin",
+    opts = {
+      dim_inactive = { enabled = true, percentage = 0.25 },
+      highlight_overrides = {
+        mocha = function(c)
+          return {
+            Normal = { bg = c.mantle },
+            Comment = { fg = "#7687a0" },
+            ["@tag.attribute"] = { style = {} },
+          }
+        end,
+      },
+    },
+  },
+}