draft about distinct id implementation

[marandaneto]

:loudspeaker: Type of change

• [ ] Bugfix
• [ ] New feature
• [X] Enhancement
• [ ] Refactoring

:scroll: Description

draft about distinct id implementation

:bulb: Motivation and Context

distinctId should be changeable, but still keeping compatibility with older SDKs. secureAndroidId should be deprecated, but still possible to keep compatibility.

:green_heart: How did you test it?

no tests at all, only a draft PR to support my DACI request.

:pencil: Checklist

• [ ] I reviewed submitted code
• [ ] I added tests to verify changes
• [ ] All tests passing

:crystal_ball: Next steps

get approval and do the real implementation.

[marandaneto]

I added a few comments :)

thanks for the review :) just emphasizing that this Draft PR is only to support the DACI, not a final implementation. I've replied all of them o/