feat(app-check, android): Implement app check token change listener

[MrLibya]

Description

Implement app check token change listener only for android ( as the sdk don't support for iOS )

onTokenChanged function will be trigger with object contain token, expireTimeMillis, appName

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • No

Test Plan

  const onAppCheckTokenChanges = (result) => {
    console.log("onAppCheckTokenChanges: ",result)
  }

  React.useEffect(() => {
    const subscriber = appCheck().onTokenChanged(onAppCheckTokenChanges)

    return subscriber
  }, [])

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
react-native-firebase	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 4, 2023 6:34pm
react-native-firebase-next	❌ Failed (Inspect)			Sep 4, 2023 6:34pm

[CLAassistant]

All committers have signed the CLA.

[MrLibya]

@mikehardy @InvertaseBot Is an anything I need todo to get reviewed ?

[mikehardy]

Nice! The native implementation looks great - I especially like that you correctly handled the destruction of the catalyst instance ✅

At the javascript level it looks like we need a little bit of change here in order to comply with the firebase-js-sdk app-check contract, where they allow for multiple listeners for the same app, and their typings are a bit different. Here in react-native-firebase we must be a drop-in replacement for firebase-js-sdk where ever possible and I think in this case we can meet their behavior (multiple listeners) and typings,. What do you think?

[MrLibya]

@mikehardy I've updated onTokenChanged to match params same as firebase js sdk, But onError. onCompletion isn't used, I've checked firebase class docs and it doesn't support passing error callback or throw error, Same thing if you check onAuthStateChanged for firebase auth, In js sdk it support the onError but in native android it doesn't.

[MrLibya]

@mikehardy Done 💯 I added support for multiple listeners and reset all commits into 1 to make it cleaner

[mikehardy]

This looks really good, thanks for handling the comments, and so quickly.
I think lint is going to be a bit annoyed at some of the formatting but I can auto-fix that and re-push to get this through + released, I'm doing a bunch of PRs today so it fits in my flow
Will merge as soon as CI goes green

🏆 !