[Bug]: //tools:add_module JSON format is undocumented

[davidben]

What happened?

When I was writing some tooling over BCR (Publish to BCR did not meet our needs), I needed to emit a JSON file for //tools:add_module. While the existence of the JSON file is a documented flag, the format is not. I had to read the source to figure it out.

Since this is a documented flag and all, the format really should be documented somewhere.

Version

n/a

How to reproduce

No response

Any other information?

No response