Use @types/culori (#735)

This removes the need to define types here. Also this allows third
parties to use this package without having to declare type definitions
for culori.

Author: remcohaszing

packages/tailwindcss-language-service/package-lock.json

@@ -14,6 +14,7 @@
     "prepublishOnly": "npm run build"
   },
   "dependencies": {
+    "@types/culori": "^2.0.0",
     "@types/moo": "0.5.3",
     "@types/semver": "7.3.10",
     "becke-ch--regex--s0-0-v1--base--pl--lib": "1.4.0",