With this change we do several changes to the `angular.json` configuration for `build` , `server` and `app-shell` targets so that these are `production` by default.
- build, server and app-shell targets are configured to run production by default.
- We add a new configuration named `development` to run the mentioned builder targets in development. Ex: `ng build --configuration development`.
- When adding `universal` or `app-shell`, we generate the full set of configurations as per the `buiid` target. Previously, we only generated the `production` configuration.
- We added a helper script in `package.json` to run build in watch mode. `npm run watch` which is a shortcut for `ng build --watch --configuration development`
Output paths that use the locale within a locale specific configuration will now be automatically removed. This will prevent the potential for the migrated configuration to generate an output path with double locale segments.
This migration will update current projects by adding the `i18n` project level option and add `localize` option in the server and browser builder configurations when both `i18nLocale` and `i18nFile` are defined.
The optimizations are suggested to;
1) disables ngDevMode via terser
2) helps with cold server starts the same way as client by lowering JS parse times
