Add common appUtils to augment get_environment with app level data

[schnecle]

Description

• Augment app utils to look for app ids in google-services files
• Augment get_environment to output app ids

Scenarios Tested

• Added unit test coverage for get_environment as well as the new apputils
• Testing e2e locally on several different apps

Sample Commands

gemini
/crashlytics:connect

gemini
"What's my firebase environment look like?"

[fredzqm]

Can there ever be a case where an app directory found >1 appId / bundleId?

If the underlying detectAppIdsForPlatform could potentially return multiple? Maybe it's safer to include all responses in the App struct.

We can log those anomaly at a higher level.

[schnecle]

This can and does happen. In this case, I create multiple app instances. They are unique by appId and bundleId but may have the same platform and directory.

[joehan]

This file seems to duplicate a lot of what we've built in https://github.com/firebase/firebase-tools/blob/master/src/dataconnect/appFinder.ts - we really ought to unify the 2. I recall @fredzqm was looking at doing something like this

[schnecle]

I have followup PR to do just that. I had some of that in here, but Fred recommended I take it out. See the conversation here: #9236 (comment)