Extract core functionality from `libs/angular` to allow teams to depend on `libs/ui-common` instead.
Moves the following functionality to `ui-common`.
- `I18nPipe`. `libs/angular` still has an old copy but `components` depends on the new variant from `ui-common`.
- `safeProvider`, `SafeProvider` and `SafeInjectionToken`. `libs/angular`re-exports these to avoid needing to update all consumers.
Use SafeProvider as a factory for all our providers to ensure
that the DI token, implementation, and deps all match.
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Co-authored-by: Matt Gibson <mgibson@bitwarden.com>
