build(aio): upgrade sample package.json files to jasmine@~2.8.0 (#20165)

- Update tooling to support revised testing guide (PR #20697).
- Require jasmine upgrade for examples that use marble testing.
- Copy `cli/package.json` to `testing/` and add `jasmine-marbles`.
- Resolve merge conflicts created by `NgModules` guides.

PR Close #20165

aio/tools/example-zipper/customizer/package-json/testing.json

@@ -7,12 +7,11 @@
     { "name": "lint", "command": "ng lint" },
     { "name": "e2e", "command": "ng e2e" }
   ],
-  "dependencies": [
-    "web-animations-js"
-  ],
+  "dependencies": [],
   "devDependencies": [
     "@angular/cli",
     "@types/jasminewd2",
+    "jasmine-spec-reporter",
     "karma-coverage-istanbul-reporter",
     "ts-node"
   ]