build(package): update-endpoints:types script and required devDependencies

Author: gr2m

package.json

@@ -11,7 +11,8 @@
     "update-endpoints": "npm-run-all update-endpoints:*",
     "update-endpoints:fetch-json": "node scripts/update-endpoints/fetch-json",
     "update-endpoints:code": "node scripts/update-endpoints/code",
-    "update-endpoints:docs": "node scripts/update-endpoints/docs"
+    "update-endpoints:docs": "node scripts/update-endpoints/docs",
+    "update-endpoints:types": "node scripts/update-endpoints/types"
   },
   "repository": "https://github.com/octokit/plugin-rest-endpoint-methods.js",
   "keywords": [
@@ -27,6 +28,7 @@
     "deprecation": "^2.3.1"
   },
   "devDependencies": {
+    "@gimenete/type-writer": "^0.1.4",
     "@octokit/core": "^2.1.2",
     "@octokit/graphql": "^4.3.1",
     "@pika/pack": "^0.5.0",
@@ -38,12 +40,16 @@
     "@types/node": "^13.1.0",
     "fetch-mock": "^8.0.0",
     "jest": "^24.9.0",
+    "lodash.camelcase": "^4.3.0",
+    "lodash.set": "^4.3.2",
+    "lodash.upperfirst": "^4.3.1",
     "mustache": "^4.0.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^1.19.1",
     "semantic-release": "^17.0.0",
     "semantic-release-plugin-update-version-in-files": "^1.0.0",
     "sort-keys": "^4.0.0",
+    "string-to-jsdoc-comment": "^1.0.0",
     "ts-jest": "^25.1.0",
     "typescript": "^3.7.2"
   },