refactor(mobile): server info to use data classes instead of dtos (#4591)

* refactor: server info model to use data classes instead of dtos

* mobile: add return types and refactor private variables in map / stack

---------

Co-authored-by: shalong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>

mobile/lib/shared/models/server_info/server_disk_info.model.dart

@@ -0,0 +1,59 @@
+import 'package:openapi/api.dart';
+
+class ServerDiskInfo {
+  final String diskAvailable;
+  final String diskSize;
+  final String diskUse;
+  final double diskUsagePercentage;
+
+  const ServerDiskInfo({
+    required this.diskAvailable,
+    required this.diskSize,
+    required this.diskUse,
+    required this.diskUsagePercentage,
+  });
+
+  ServerDiskInfo copyWith({
+    String? diskAvailable,
+    String? diskSize,
+    String? diskUse,
+    double? diskUsagePercentage,
+  }) {
+    return ServerDiskInfo(
+      diskAvailable: diskAvailable ?? this.diskAvailable,
+      diskSize: diskSize ?? this.diskSize,
+      diskUse: diskUse ?? this.diskUse,
+      diskUsagePercentage: diskUsagePercentage ?? this.diskUsagePercentage,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'ServerDiskInfo(diskAvailable: $diskAvailable, diskSize: $diskSize, diskUse: $diskUse, diskUsagePercentage: $diskUsagePercentage)';
+  }
+
+  ServerDiskInfo.fromDto(ServerInfoResponseDto dto)
+      : diskAvailable = dto.diskAvailable,
+        diskSize = dto.diskSize,
+        diskUse = dto.diskUse,
+        diskUsagePercentage = dto.diskUsagePercentage;
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is ServerDiskInfo &&
+        other.diskAvailable == diskAvailable &&
+        other.diskSize == diskSize &&
+        other.diskUse == diskUse &&
+        other.diskUsagePercentage == diskUsagePercentage;
+  }
+
+  @override
+  int get hashCode {
+    return diskAvailable.hashCode ^
+        diskSize.hashCode ^
+        diskUse.hashCode ^
+        diskUsagePercentage.hashCode;
+  }
+}