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)
The admin create script previously only updated the package.json dependencies
for direct dependencies. This did not ensure that all built packages were used
due to some built packages being used as transitive dependencies. The npm
`overrides` field is now also used to ensure that these dependencies are also
properly redirected to the built packages.
This update addresses an issue where an older version of the CLI tarball was mistakenly employed in creating a new application via `yarn admin create`.
Additionally, `yarn admin create` now accommodates extra options that can be utilized with `ng new`.
Example:
```
yarn admin create my-app --ssr
```
