This commit also changes the config files and their layout to (reasonably closely) match what the cli would generate for a new app. Related Jira issue: [TOOL-815](https://angular-team.atlassian.net/browse/TOOL-815) PR Close #29926
PR Close #21763
This reverts commit 01cef016ee81816bc3229863396924ae0dca3bdf.
PR Close #21712