feat(ng-schematics): Release @puppeteer/ng-schematics (#9244)

**What kind of change does this PR introduce?**

Adds `@puppeteer/ng-schematics` to the list of packages to be published
to `npm`

**Did you add tests for your changes?**

Not relevant.

**If relevant, did you update the documentation?**

Not for in this PR.

**Summary**

We want to publish to `npm` so people can do `ng add
@puppeteer/ng-schematics` and use it with Angular CLI.

**Does this PR introduce a breaking change?**

No

**Other information**

packages/ng-schematics/package.json

@@ -16,6 +16,10 @@
     "puppeteer",
     "schematics"
   ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/puppeteer/puppeteer/tree/main/packages/ng-schematics"
+  },
   "author": "The Chromium Authors",
   "license": "Apache-2.0",
   "engines": {

release-please-config.json

@@ -8,7 +8,10 @@
     "packages/puppeteer-core": {
       "component": "puppeteer-core"
     },
-    "packages/testserver": {}
+    "packages/testserver": {},
+    "packages/ng-schematics": {
+      "initial-version": "0.1.0"
+    }
   },
   "plugins": [
     {