Add typescript-eslint-language-service (#30015)

webapp/package-lock.json

@@ -45,6 +45,7 @@
         "sass-loader": "16.0.2",
         "strip-ansi": "7.1.0",
         "style-loader": "4.0.0",
+        "typescript-eslint-language-service": "5.0.5",
         "webpack": "5.95.0",
         "webpack-cli": "5.1.4",
         "webpack-dev-server": "5.1.0"
@@ -27025,6 +27026,17 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint-language-service": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/typescript-eslint-language-service/-/typescript-eslint-language-service-5.0.5.tgz",
+      "integrity": "sha512-b7gWXpwSTqMVKpPX3WttNZEyVAMKs/2jsHKF79H+qaD6mjzCyU5jboJe/lOZgLJD+QRsXCr0GjIVxvl5kI1NMw==",
+      "dev": true,
+      "peerDependencies": {
+        "@typescript-eslint/parser": ">= 5.0.0",
+        "eslint": ">= 8.0.0",
+        "typescript": ">= 4.0.0"
+      }
+    },
     "node_modules/ua-parser-js": {
       "version": "1.0.39",
       "resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-1.0.39.tgz",