Support better mono repos

Mono repos are mixing many packages in a single tree, stored in Git.
As such they are essentially similar to complex application/system codebases

We should find way to handle these correctly:
- workspaces-like processing is one approach
- support specific mono-repo-like tools like Android "repo"-
- See also Rush tool https://github.com/microsoft/rushstack which is itself a monorepo and uses pnpm and a json-like manifest (with comments): https://github.com/microsoft/rushstack/blob/22e59e4f57f6730e3304a47591fed1bb6926cef9/rush.json