Sentry's protocol now offers a way to report counts and reason to why data gets dropped.

Spec: https://develop.sentry.dev/sdk/client-reports/

This was implemented in other places that can be used as a reference:

• JavaScript: feat(browser): Client Report Support  sentry-javascript#3955
• Python: feat(transport): Client Report Support sentry-python#1181
• Relay: feat(client-reports): Protocol support for client reports  relay#1074

This will also be implemented in the following SDKs so collaborating with folks adding support there is ideal

• Dart: Add 'Client Reports' to the Dart SDK sentry-dart#735
• Java: Add 'Client Reports' to the Java and Android SDKs sentry-java#1894
• Apple: Add 'Client Reports' to the Apple SDK sentry-cocoa#1655
• React Native: Add 'Client Reports' to the React Native SDK sentry-react-native#2034