feat(sprint3): EconomyModule TetardCoin + TwitchModule EventSub — migration + 36 tests

src/twitch/entities/processed-event.entity.ts

@@ -0,0 +1,10 @@
+import { Entity, PrimaryColumn, CreateDateColumn } from 'typeorm';
+
+@Entity('processed_events')
+export class ProcessedEvent {
+  @PrimaryColumn({ type: 'varchar', length: 255 })
+  id: string;
+
+  @CreateDateColumn({ name: 'processed_at' })
+  processedAt: Date;
+}