Updates for all angular.io links to the new angular.dev domain. Additionally, adjustment to new resources where the equivalent does not exist on the new site (e.g. Tour of Heroes tutorial)
Functional guards and resolvers were introduced in the Angular router in v14.2.
This commit adds the ability to generate functional router guards by
specifying `--guardType` instead of `--implements`. These guards are also
accompanied by a test that includes a helper function for executing the
guard in the `TestBed` environment so that any `inject` calls in the
guard will work properly. Functional resolvers are generated by adding
the `--functional` flag.
An internal schematics helper rule has been introduced for Angular schematics that only generate a set of project files from a set of templated files. Multiple current generation schematics contained essentially the same code which increased the sustainment burden and made refactoring and improvements more complicated.
