Add sourcemaps & emulator debugging support

[ciriousjoker]

• Generate sourcemaps so the debugger can find the .ts files
• Enable --inspect-functions so

Caveat

1. Debugger disconnects when saving files (because everything recompiles & emulators seem to restart).
2. I didn't test this yet, I just added the flags where it made sense (adding them works in a real project though)
3. I wrote no documentation for this for now

[simondotm]

This PR looks good, thanks for the contribution.

I've opened some discussion for this feature here: https://github.com/simondotm/nx-firebase/issues/165#issuecomment-1797046946

I'm going to hold this PR here for now, while I plan out what is needed in the next release, and if this feature can be included with all of the above.

[ciriousjoker]

I have no clue how to add the remaining stuff like e2e tests and schema migrations

[dzivoing]

Has this been merged ? I am trying to debug functions with no success

[simondotm]

I've moved tests around so I'll resolve the conflict/merge from master.

UPDATE: cant merge this as-is, because it is a commit to main branch. I'll try and re-target to a feature branch.

[simondotm]

@ciriousjoker I would like to merge your PR, but because it is merging commits directly to main I cannot accept it.

If you could please sync your fork with the latest from my repo, then re-create your changes on a separate PR branch on your fork and re-submit the PR I'll merge it, and you will keep the contribution credit for this change.

Alternatively, just let me know if you are busy, and I will make the changes here myself.

Thanks

[ciriousjoker]

@simondotm there you go