* refactor: fix `import` and `export` paths to work with classic resolution
`ts-api-guardian` only support classic module resolution which means that we need to specify `index` so that the resolution works.
* build: add `npm_package` to packages
* build: add ts-api-guardian to repo
* test: add api golden files
* refactor: use proper namespace instead of alias export
* refactor: use proper namspace einstead of alias export
* build: add `_golden_api` files
At the moment ts api guardian doesn't support aliased symbols as namespaces, this is a workaround to still have namespaced symbols in the final golden file.
* build: update angular archive for workspace
* test: fix reference to `TestHost` to use namespace
* refactor: create `fs` namespace instead of aliased export
* test: update api golden file for `@angular-devkit/core/node`
