Implemented EXIF store and display (#19)

* Added EXIF extracting in the backend
* Added EXIF displaying on `image_viewer_page.dart`
* Added Icon for backup option not enable

server/src/modules/background-task/background-task.service.ts

@@ -0,0 +1,25 @@
+import { InjectQueue } from '@nestjs/bull/dist/decorators';
+import { Injectable } from '@nestjs/common';
+import { Queue } from 'bull';
+import { randomUUID } from 'node:crypto';
+import { AssetEntity } from '../../api-v1/asset/entities/asset.entity';
+
+@Injectable()
+export class BackgroundTaskService {
+  constructor(
+    @InjectQueue('background-task')
+    private backgroundTaskQueue: Queue,
+  ) {}
+
+  async extractExif(savedAsset: AssetEntity, fileName: string, fileSize: number) {
+    const job = await this.backgroundTaskQueue.add(
+      'extract-exif',
+      {
+        savedAsset,
+        fileName,
+        fileSize,
+      },
+      { jobId: randomUUID() },
+    );
+  }
+}