feat: sync cloudId and eTag on sync

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/Messages.g.kt

@@ -315,6 +315,7 @@ interface NativeSyncApi {
   fun hashAssets(assetIds: List<String>, allowNetworkAccess: Boolean, callback: (Result<List<HashResult>>) -> Unit)
   fun cancelHashing()
   fun getTrashedAssets(): Map<String, List<PlatformAsset>>
+  fun getCloudIdForAssetIds(assetIds: List<String>): Map<String, String?>
 
   companion object {
     /** The codec used by NativeSyncApi. */
@@ -508,6 +509,23 @@ interface NativeSyncApi {
           channel.setMessageHandler(null)
         }
       }
+      run {
+        val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.NativeSyncApi.getCloudIdForAssetIds$separatedMessageChannelSuffix", codec, taskQueue)
+        if (api != null) {
+          channel.setMessageHandler { message, reply ->
+            val args = message as List<Any?>
+            val assetIdsArg = args[0] as List<String>
+            val wrapped: List<Any?> = try {
+              listOf(api.getCloudIdForAssetIds(assetIdsArg))
+            } catch (exception: Throwable) {
+              MessagesPigeonUtils.wrapError(exception)
+            }
+            reply.reply(wrapped)
+          }
+        } else {
+          channel.setMessageHandler(null)
+        }
+      }
     }
   }
 }

mobile/android/app/src/main/kotlin/app/alextran/immich/sync/MessagesImplBase.kt

@@ -316,4 +316,10 @@ open class NativeSyncApiImplBase(context: Context) : ImmichPlugin() {
     hashTask?.cancel()
     hashTask = null
   }
+
+  // This method is only implemented on iOS; on Android, we do not have a concept of cloud IDs
+  @Suppress("unused", "UNUSED_PARAMETER")
+  fun getCloudIdForAssetIds(assetIds: List<String>): Map<String, String?> {
+    return emptyMap()
+  }
 }