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)
When using the schematics-cli with a local collection, the debug mode is enabled by default. Debug mode also enables dry run mode by default. This can result in a confusing situation when developing a schematic locally as files will not be written to disk but no messages are present explaining why. To improve the developer experience, messages will now be shown both when debug mode is enabled and when dry run is enabled. If either is enabled by default the reason will also be shown.
At the moment, only kebab case args works, and this might be misleading if you come from the Angular CLI. As for instance `--dryRun` will have no effect.
Fixes#12599
