118 - Implement shared album feature (#124)

* New features 
  - Share album. Users can now create albums to share with existing people on the network.
  - Owner can delete the album.
  - Owner can invite the additional users to the album.
  - Shared users and the owner can add additional assets to the album.
* In the asset viewer, the user can swipe up to see detailed information and swip down to dismiss.
* Several UI enhancements.

server/src/api-v1/sharing/entities/asset-shared-album.entity.ts

@@ -0,0 +1,30 @@
+import { Column, Entity, JoinColumn, ManyToOne, OneToOne, PrimaryGeneratedColumn, Unique } from 'typeorm';
+import { AssetEntity } from '../../asset/entities/asset.entity';
+import { SharedAlbumEntity } from './shared-album.entity';
+
+@Entity('asset_shared_album')
+@Unique('PK_unique_asset_in_album', ['albumId', 'assetId'])
+export class AssetSharedAlbumEntity {
+  @PrimaryGeneratedColumn()
+  id: string;
+
+  @Column()
+  albumId: string;
+
+  @Column()
+  assetId: string;
+
+  @ManyToOne(() => SharedAlbumEntity, (sharedAlbum) => sharedAlbum.sharedAssets, {
+    onDelete: 'CASCADE',
+    nullable: true,
+  })
+  @JoinColumn({ name: 'albumId' })
+  albumInfo: SharedAlbumEntity;
+
+  @ManyToOne(() => AssetEntity, {
+    onDelete: 'CASCADE',
+    nullable: true,
+  })
+  @JoinColumn({ name: 'assetId' })
+  assetInfo: AssetEntity;
+}