Deprecate: metrics api (#2312)

* deprecate metrics api

* update changelog'

* fix analyze

* fix flutter analyze

* remove metrics tests

* update

* remove metrics test

* Update CHANGELOG.md

* deprecate Hub.metricsApi as well

* fix analyze

CHANGELOG.md

@@ -5,7 +5,7 @@
 ### Features
 
 - Emit `transaction.data` inside `contexts.trace.data` ([#2284](https://github.com/getsentry/sentry-dart/pull/2284))
-- Blocking app starts if "appLaunchedInForeground" is false. (Android only) ([#2291](https://github.com/getsentry/sentry-dart/pull/2291)
+- Blocking app starts if "appLaunchedInForeground" is false. (Android only) ([#2291](https://github.com/getsentry/sentry-dart/pull/2291))
 
 ### Enhancements
 
@@ -21,6 +21,11 @@
 - Rounding error used on frames.total and reject frame measurements if frames.total is less than frames.slow or frames.frozen ([#2308](https://github.com/getsentry/sentry-dart/pull/2308))
 - iOS replay integration when only `onErrorSampleRate` is specified ([#2306](https://github.com/getsentry/sentry-dart/pull/2306))
 
+### Deprecate
+
+- Metrics API ([#2312](https://github.com/getsentry/sentry-dart/pull/2312))
+  - Learn more: https://sentry.zendesk.com/hc/en-us/articles/26369339769883-Metrics-Beta-Coming-to-an-End
+
 ## 8.9.0
 
 ### Features

dart/lib/src/hub.dart

@@ -44,6 +44,8 @@ class Hub {
   late final MetricsApi _metricsApi;
 
   @internal
+  @Deprecated(
+      'Metrics will be deprecated and removed in the next major release. Sentry will reject all metrics sent after October 7, 2024. Learn more: https://sentry.zendesk.com/hc/en-us/articles/26369339769883-Upcoming-API-Changes-to-Metrics')
   MetricsApi get metricsApi => _metricsApi;
 
   @internal

dart/lib/src/hub_adapter.dart

@@ -28,6 +28,7 @@ class HubAdapter implements Hub {
 
   @override
   @internal
+  // ignore: deprecated_member_use_from_same_package
   MetricsApi get metricsApi => Sentry.currentHub.metricsApi;
 
   factory HubAdapter() {

dart/lib/src/sentry.dart

@@ -316,6 +316,8 @@ class Sentry {
   static ISentrySpan? getSpan() => _hub.getSpan();
 
   /// Gets access to the metrics API for the current hub.
+  @Deprecated(
+      'Metrics will be deprecated and removed in the next major release. Sentry will reject all metrics sent after October 7, 2024. Learn more: https://sentry.zendesk.com/hc/en-us/articles/26369339769883-Upcoming-API-Changes-to-Metrics')
   static MetricsApi metrics() => _hub.metricsApi;
 
   @internal