Add Consent Mode v2 (Android & iOS)

[pinguluk]

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Documentation changes
• Other... Please describe:

PR Checklist

Please check your PR fulfills the following requirements:

Bugfixes:

• Regression testing has been carried out using the example project to ensure the intended bug is fixed and no regression bugs have been inadvertently introduced.

New features/enhancements:

• Exhaustive testing has been carried out for the new functionality
• Regression testing has been carried out to ensure no existing functionality is adversely affected
• Documentation has been added / updated
• The example project has been update to validate/demonstrate the new functionality.

What is the purpose of this PR?

GA4 now requires consent (EEA)
https://support.google.com/analytics/answer/14275483

Does this PR introduce a breaking change?

• Yes
• No

What testing has been done on the changes in the PR?

Forked the firebasex test project and tested the consent functionality
https://github.com/pinguluk/cordova-plugin-firebasex-test

What testing has been done on existing functionality?

Other information

[pinguluk]

I've also updated iOS sdk to 10.24.0 and bumped up Android sdks versions

[dpa99c]

Thanks, I'm going to try to make some time next week to merge this and some other PRs, fix some niggling bugs and get a release out

[pinguluk]

Thanks, I'm going to try to make some time next week to merge this and some other PRs, fix some niggling bugs and get a release out

Hey, thanks for your contribution. Can you please check if my modifications are correct? Because I don't really know Objective-c and I had to rely on your previous code, to add the new features.

Also I had to downgrade GoogleSignIn back to 6.2.4, because v7.0.0+ requires some code migration and I don't know exactly what modifications I need to do in the FirebasePlugin.m, to get this to work