Add test infrastructure with coverage and DB test skipping

- Create @reviq/test-helpers package with shared test utilities
- Add describeE2E helper that auto-prefixes test names with [e2e]
- Support SKIP_DB_TESTS=1 to skip database-dependent tests
- Add unix socket support for TEST_DATABASE_URL
- Add root commands: test:unit, test:all, test:cov, test:unit:cov
- Configure bunfig.toml to exclude dist/ from coverage reports
- Clean up tsconfig.json files to remove redundant settings

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/testing/virtual-authenticator/tsconfig.json

@@ -1,15 +1,7 @@
 {
   "extends": "@macalinao/tsconfig/tsconfig.base.json",
   "compilerOptions": {
-    "outDir": "./dist",
-    "rootDir": "./src",
-    "module": "NodeNext",
-    "moduleResolution": "NodeNext",
-    "declaration": true,
-    "declarationMap": true,
-    "composite": true,
     "types": ["node", "bun"]
   },
-  "include": ["src/**/*"],
   "exclude": ["node_modules", "dist"]
 }