Enforce mandatory session verification only for new logins (#2811)

* Enforce mandatory session verification only for new logins

- Creates `AppMigration` base interface as a way to isolate migration logic, app migrations must implement this interface.
- Creates `AppMigration01` with the existing logs removal migration and `AppMigration02` with the logic to allow existing sessions to skip verification.
- Add `DefaultSessionPreferencesStoreFactory.remove(sessionId)` to allow a ephemeral session store access to exist outside the `SessionScope` for this new migration.

* Fix tests

* Add more tests.

This also includes creating several abstractions.

* Review changes.

- Make `orderedMigrations` a class property, `migrations` just a constructor parameter to avoid incorrect usages.
- Create `lastMigration` property too, use it instead of `MIGRATION_VERSION`.

features/call/src/test/kotlin/io/element/android/features/call/utils/DefaultCallWidgetProviderTest.kt

@@ -18,7 +18,6 @@ package io.element.android.features.call.utils
 
 import com.google.common.truth.Truth.assertThat
 import io.element.android.features.preferences.api.store.AppPreferencesStore
-import io.element.android.libraries.featureflag.test.InMemoryAppPreferencesStore
 import io.element.android.libraries.matrix.api.MatrixClientProvider
 import io.element.android.libraries.matrix.api.widget.CallWidgetSettingsProvider
 import io.element.android.libraries.matrix.test.A_ROOM_ID
@@ -28,6 +27,7 @@ import io.element.android.libraries.matrix.test.FakeMatrixClientProvider
 import io.element.android.libraries.matrix.test.room.FakeMatrixRoom
 import io.element.android.libraries.matrix.test.widget.FakeCallWidgetSettingsProvider
 import io.element.android.libraries.matrix.test.widget.FakeWidgetDriver
+import io.element.android.libraries.preferences.test.InMemoryAppPreferencesStore
 import kotlinx.coroutines.test.runTest
 import org.junit.Test