test: add vitest

* feature(root): add vitest and some basic tests

* fix(test): after rebase + added referrars test and more sites

* fix(test): test broken after rebase

* fix(test): provide db url to make prisma happy

* fix tests

packages/common/package.json

@@ -3,6 +3,7 @@
   "version": "0.0.1",
   "main": "index.ts",
   "scripts": {
+    "test": "vitest",
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {