feat(core, editor): Support pairedItem for pinned data (#3843)

* 📘 Adjust interface

* ⚡ Adjust pindata in state store

* ✨ Add utils

* ⚡ Replace utils calls

* ⚡ Adjust pindata intake and display

* 🔥 Remove excess BE fixes

* 📝 Update comment

* 🧪 Adjust tests

* 🔥 Remove unneeded helper

* 🚚 Improve naming

* 🧹 Clean up `ormconfig.ts`

* 📘 Add types and type guards

* ⚡ Improve serializer for sqlite

* ✨ Create migration utils

* ⚡ Set up sqlite serializer

* 🗃️ Write sqlite migration

* 🗃️ Write MySQL migration

* 🗃️ Write Postgres migration

* ⚡ Add imports and exports to barrels

* 🚚 Rename `runChunked` to `runInBatches`

* ⚡ Improve migration loggers

* ♻️ Address feedback

* 🚚 Improve naming

packages/cli/src/databases/migrations/postgresdb/1659902242948-AddJsonKeyPinData.ts

@@ -0,0 +1,46 @@
+import {
+	getTablePrefix,
+	logMigrationEnd,
+	logMigrationStart,
+	runInBatches,
+} from '../../utils/migrationHelpers';
+import { addJsonKeyToPinDataColumn } from '../sqlite/1659888469333-AddJsonKeyPinData';
+import type { MigrationInterface, QueryRunner } from 'typeorm';
+
+/**
+ * Convert JSON-type `pinData` column in `workflow_entity` table from
+ * `{ [nodeName: string]: IDataObject[] }` to `{ [nodeName: string]: INodeExecutionData[] }`
+ */
+export class AddJsonKeyPinData1659902242948 implements MigrationInterface {
+	name = 'AddJsonKeyPinData1659902242948';
+
+	async up(queryRunner: QueryRunner) {
+		logMigrationStart(this.name);
+
+		const workflowTable = `${getTablePrefix()}workflow_entity`;
+
+		const PINDATA_SELECT_QUERY = `
+			SELECT id, "pinData"
+			FROM ${workflowTable}
+			WHERE "pinData" IS NOT NULL;
+		`;
+
+		const PINDATA_UPDATE_STATEMENT = `
+			UPDATE ${workflowTable}
+			SET "pinData" = :pinData
+			WHERE id = :id;
+		`;
+
+		await runInBatches(
+			queryRunner,
+			PINDATA_SELECT_QUERY,
+			addJsonKeyToPinDataColumn(queryRunner, PINDATA_UPDATE_STATEMENT),
+		);
+
+		logMigrationEnd(this.name);
+	}
+
+	async down() {
+		// irreversible migration
+	}
+}