chore: add dev dependencies for cloud-rad ref docs (#25)

Author: fhinkel

package.json

@@ -36,7 +36,9 @@
     "prepare": "npm run compile-protos && npm run compile",
     "system-test": "c8 mocha build/system-test",
     "samples-test": "cd samples/ && npm link ../ && npm install && npm test && cd ../",
-    "test": "c8 mocha build/test"
+    "test": "c8 mocha build/test",
+    "api-extractor": "api-extractor run --local",
+    "api-documenter": "api-documenter yaml --input-folder=temp"
   },
   "dependencies": {
     "google-gax": "^2.6.1"
@@ -58,7 +60,9 @@
     "ts-loader": "^8.0.0",
     "typescript": "^3.9.5",
     "webpack": "^4.43.0",
-    "webpack-cli": "^3.3.11"
+    "webpack-cli": "^3.3.11",
+    "@microsoft/api-documenter": "^7.8.10",
+    "@microsoft/api-extractor": "^7.8.10"
   },
   "engines": {
     "node": ">=10.0.0"