feat(api): user authentication

src/users/user.entity.ts

@@ -0,0 +1,17 @@
+import { Entity, Column, PrimaryGeneratedColumn, OneToOne } from "typeorm";
+import { SpotifyConnection } from "../sources/spotify/spotify-connection.entity";
+
+@Entity()
+export class User {
+  @PrimaryGeneratedColumn("uuid")
+  id: string;
+
+  @Column()
+  displayName: string;
+
+  @Column({ nullable: true })
+  photo?: string;
+
+  @Column(type => SpotifyConnection)
+  spotify: SpotifyConnection;
+}