feat: relocate whichkey and add cheatsheet.nvim

modules/utility/colorizer.nix

@@ -0,0 +1,24 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.utility.colorizer;
+in {
+  options.vim.utility.colorizer = {
+    enable = mkEnableOption "ccc color picker for neovim";
+  };
+
+  config = mkIf (cfg.enable) {
+    vim.startPlugins = [
+      "colorizer"
+    ];
+
+    vim.configRC.ccc =
+      nvim.dag.entryAnywhere ''
+      '';
+  };
+}

modules/utility/default.nix

@@ -0,0 +1,5 @@
+_: {
+  imports = [
+    ./colorizer.nix
+  ];
+}