✅(y-provider) add tests for y-provider server

We add jest tests for the y-provider server.
The CI will be able to run the tests.

src/frontend/servers/y-provider/tsconfig.json

@@ -13,6 +13,13 @@
     "jsx": "preserve",
     "incremental": false,
     "outDir": "./dist",
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "tsc-alias": {
+    "resolveFullPaths": true,
+    "verbose": false
   },
   "include": ["**/*.ts"],
   "exclude": ["node_modules"]