feat: Add emoji and alot of other fixes

electron/cqrs/queries/handlers/getCustomEmojis.ts

@@ -0,0 +1,9 @@
+import { DataSource } from 'typeorm';
+import { CustomEmojiEntity } from '../../../entities';
+import { rowToCustomEmoji } from '../../mappers';
+
+export async function handleGetCustomEmojis(dataSource: DataSource) {
+  const rows = await dataSource.getRepository(CustomEmojiEntity).find({ order: { updatedAt: 'DESC' } });
+
+  return rows.map(rowToCustomEmoji);
+}