feat(theme): Use cattppuccin-mocha theme

nvim/plugin/1.catppuccin.lua

@@ -0,0 +1,27 @@
+if vim.g.did_load_catppuccin_plugin then
+  return
+end
+vim.g.did_load_catppuccin_plugin = true
+
+require("catppuccin").setup({
+  integrations = {
+    aerial = true,
+    cmp = true,
+    diffview = true,
+    gitsigns = true,
+    indent_blankline = {
+      enabled = true,
+      -- scope_color = "", -- catppuccin color (eg. `lavender`) Default: text
+      colored_indent_levels = false,
+    },
+    lsp_trouble = true,
+    navic = {
+      enabled = false,
+      custom_bg = "NONE", -- "lualine" will set background to mantle
+    },
+    nvim_surround = true,
+    overseer = true,
+    treesitter = true,
+    which_key = true,
+  }
+})