Add Session entity

This entity implements the Session interface from connect-typeorm, which we will later use to store session data from express-session.

Signed-off-by: David Mehren <git@herrmehren.de>

src/users/session.entity.ts

@@ -0,0 +1,15 @@
+import { ISession } from 'connect-typeorm';
+import { Column, Entity, Index, PrimaryColumn } from 'typeorm/index';
+
+@Entity()
+export class Session implements ISession {
+  @PrimaryColumn('varchar', { length: 255 })
+  public id = '';
+
+  @Index()
+  @Column('bigint')
+  public expiredAt = Date.now();
+
+  @Column('text')
+  public json = '';
+}