feat(metrics): Add public API to collect count, distribution and gauge

[github-actions]

Note

The pull request "feat(metrics): Add public API to collect count, distribution and gauge" was created by @philprime but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

📜 Description

Adds

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

[linear]

COCOA-1050