Refacor electron app and add migrations

electron/entities/BanEntity.ts

@@ -0,0 +1,32 @@
+import {
+  Entity,
+  PrimaryColumn,
+  Column
+} from 'typeorm';
+
+@Entity('bans')
+export class BanEntity {
+  @PrimaryColumn('text')
+  oderId!: string;
+
+  @PrimaryColumn('text')
+  roomId!: string;
+
+  @Column('text', { nullable: true })
+  userId!: string | null;
+
+  @Column('text')
+  bannedBy!: string;
+
+  @Column('text', { nullable: true })
+  displayName!: string | null;
+
+  @Column('text', { nullable: true })
+  reason!: string | null;
+
+  @Column('integer', { nullable: true })
+  expiresAt!: number | null;
+
+  @Column('integer')
+  timestamp!: number;
+}