Add RoomMembershipDetails to get the room member info for the current user and the sender of its m.room.member state event in the room.

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/room/FakeRoomPreview.kt

@@ -22,6 +22,7 @@ class FakeRoomPreview(
     override val info: RoomPreviewInfo = aRoomPreviewInfo(),
     private val declineInviteResult: () -> Result<Unit> = { lambdaError() },
     private val forgetRoomResult: () -> Result<Unit> = { lambdaError() },
+    private val roomMembershipDetails: () -> Result<RoomMembershipDetails?> = { lambdaError() },
 ) : RoomPreview {
     override suspend fun leave(): Result<Unit> = simulateLongTask {
         declineInviteResult()
@@ -31,5 +32,9 @@ class FakeRoomPreview(
         forgetRoomResult()
     }
 
+    override suspend fun membershipDetails(): Result<RoomMembershipDetails?> = simulateLongTask {
+        roomMembershipDetails()
+    }
+
     override fun close() = Unit
 }

libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/room/RoomPreviewInfoFixture.kt

@@ -27,11 +27,13 @@ fun aRoomPreview(
     info: RoomPreviewInfo = aRoomPreviewInfo(),
     declineInviteResult: () -> Result<Unit> = { lambdaError() },
     forgetRoomResult: () -> Result<Unit> = { lambdaError() },
+    roomMembershipDetails: () -> Result<RoomMembershipDetails?> = { lambdaError() },
 ) = FakeRoomPreview(
     sessionId = sessionId,
     info = info,
     declineInviteResult = declineInviteResult,
     forgetRoomResult = forgetRoomResult,
+    roomMembershipDetails = roomMembershipDetails,
 )
 
 fun aRoomPreviewInfo(