♻️(y-provider) replace y-webrtc-signaling by server-y-provider

We replace the y-webrtc-signaling app by
the server-y-provider server.
The server-y-provider server uses @hocuspocus to
do collaborative editing on docs.

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

@@ -0,0 +1,28 @@
+{
+  "name": "server-y-provider",
+  "version": "1.2.1",
+  "description": "Y.js provider for docs",
+  "repository": "https://github.com/numerique-gouv/impress",
+  "license": "MIT",
+  "type": "module",
+  "scripts": {
+    "build": "tsc -p .",
+    "dev": "nodemon --config nodemon.json",
+    "start": "node ./dist/server.js",
+    "lint": "eslint . --ext .ts"
+  },
+  "engines": {
+    "node": ">=18"
+  },
+  "dependencies": {
+    "@hocuspocus/server": "2.13.5"
+  },
+  "devDependencies": {
+    "@types/node": "*",
+    "eslint-config-impress": "*",
+    "nodemon": "3.1.4",
+    "ts-jest": "29.2.5",
+    "ts-node": "10.9.2",
+    "typescript": "*"
+  }
+}