Add some performance metrics for Sentry (#5760)

- Add `AnalyticsService.startTransaction(...)` to start a logging transaction that can be uploaded to Sentry if the user enabled the analytics upload.
- Add `AnalyticsTransaction` wrapper to abstract the Sentry ones.
- Added several helper methods to improve the UX around these transactions.
- Then measure:
  - Time until the first sync, and how it ended.
  - Time until the first rooms are displayed.
  - Time to load a room or a preview.
  - Time to load a timeline.

services/analytics/impl/src/main/kotlin/io/element/android/services/analytics/impl/DefaultAnalyticsService.kt

@@ -19,15 +19,19 @@ import im.vector.app.features.analytics.plan.UserProperties
 import io.element.android.libraries.di.annotations.AppCoroutineScope
 import io.element.android.libraries.sessionstorage.api.observer.SessionListener
 import io.element.android.libraries.sessionstorage.api.observer.SessionObserver
+import io.element.android.services.analytics.api.AnalyticsLongRunningTransaction
 import io.element.android.services.analytics.api.AnalyticsService
+import io.element.android.services.analytics.api.NoopAnalyticsTransaction
 import io.element.android.services.analytics.impl.log.analyticsTag
 import io.element.android.services.analytics.impl.store.AnalyticsStore
 import io.element.android.services.analyticsproviders.api.AnalyticsProvider
+import io.element.android.services.analyticsproviders.api.AnalyticsTransaction
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
+import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.atomic.AtomicBoolean
 
 @SingleIn(AppScope::class)
@@ -40,6 +44,8 @@ class DefaultAnalyticsService(
     private val coroutineScope: CoroutineScope,
     private val sessionObserver: SessionObserver,
 ) : AnalyticsService, SessionListener {
+    private val pendingLongRunningTransactions = ConcurrentHashMap<AnalyticsLongRunningTransaction, AnalyticsTransaction>()
+
     // Cache for the store values
     private val userConsent = AtomicBoolean(false)
 
@@ -138,4 +144,20 @@ class DefaultAnalyticsService(
             analyticsProviders.onEach { it.trackError(throwable) }
         }
     }
+
+    override fun startTransaction(name: String, operation: String?): AnalyticsTransaction {
+        return if (userConsent.get()) {
+            analyticsProviders.firstNotNullOfOrNull { it.startTransaction(name, operation) }
+        } else {
+            null
+        } ?: NoopAnalyticsTransaction
+    }
+
+    override fun startLongRunningTransaction(longRunningTransaction: AnalyticsLongRunningTransaction) {
+        pendingLongRunningTransactions[longRunningTransaction] = startTransaction(longRunningTransaction.name, longRunningTransaction.operation)
+    }
+
+    override fun stopLongRunningTransaction(longRunningTransaction: AnalyticsLongRunningTransaction) {
+        pendingLongRunningTransactions.remove(longRunningTransaction)?.finish()
+    }
 }