add (empty) photos routes

src/entity/Photo.ts

@@ -0,0 +1,17 @@
+import {
+    BaseEntity,
+    Column,
+    Entity,
+    Index,
+    PrimaryGeneratedColumn,
+} from "typeorm";
+
+@Entity()
+export class Photo extends BaseEntity {
+    @PrimaryGeneratedColumn()
+    public id: number;
+
+    @Column({ length: 190 })
+    @Index()
+    public hash: string;
+}