Add information for uploading asset and error indication with error message for each failed upload. (#315)

* Added info box

* Fixed upload endpoint doesn't report error status code

* Added chip to show update error

* Added chip to show failed upload

* Add duplication check for upload

* Better duplication-checking placement

* Remove check for duplicated asset

* Added failed backup status route

* added page

* Display error card with thumbnail

* Improved styling

* Set thumbnail with better quality

* Remove force upload error

mobile/lib/modules/backup/models/check_duplicate_asset_response.model.dart

@@ -0,0 +1,48 @@
+import 'dart:convert';
+
+class CheckDuplicateAssetResponse {
+  final bool isExist;
+  CheckDuplicateAssetResponse({
+    required this.isExist,
+  });
+
+  CheckDuplicateAssetResponse copyWith({
+    bool? isExist,
+  }) {
+    return CheckDuplicateAssetResponse(
+      isExist: isExist ?? this.isExist,
+    );
+  }
+
+  Map<String, dynamic> toMap() {
+    final result = <String, dynamic>{};
+
+    result.addAll({'isExist': isExist});
+
+    return result;
+  }
+
+  factory CheckDuplicateAssetResponse.fromMap(Map<String, dynamic> map) {
+    return CheckDuplicateAssetResponse(
+      isExist: map['isExist'] ?? false,
+    );
+  }
+
+  String toJson() => json.encode(toMap());
+
+  factory CheckDuplicateAssetResponse.fromJson(String source) =>
+      CheckDuplicateAssetResponse.fromMap(json.decode(source));
+
+  @override
+  String toString() => 'CheckDuplicateAssetResponse(isExist: $isExist)';
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is CheckDuplicateAssetResponse && other.isExist == isExist;
+  }
+
+  @override
+  int get hashCode => isExist.hashCode;
+}