perf(core): Add filtering and pagination to GET /workflows (#6845)

* Initial setup

* Specify max paginated items

* Simplify

* Add tests

* Add more tests

* Add migrations

* Add top-level property

* Add field selection

* Cleanup

* Rename `total` to `count`

* More cleanup

* Move query logic into `WorkflowRepository`

* Create `AbstractRepository`

* Cleanup

* Fix name

* Remove leftover comments

* Replace reference

* Add default for `rawSkip`

* Remove unneeded typing

* Switch to `class-validator`

* Simplify

* Simplify

* Type as optional

* Make typing more accurate

* Fix lint

* Use `getOwnPropertyNames`

* Use DSL

* Set schema at repo level

* Cleanup

* Remove comment

* Refactor repository methods to middleware

* Add middleware tests

* Remove old test files

* Remove generic experiment

* Reuse `reportError`

* Remove unused type

* Cleanup

* Improve wording

* Reduce diff

* Add missing mw

* Use `Container.get`

* Adjust lint rule

* Reorganize into subdir

* Remove unused directive

* Remove nodes

* Silly mistake

* Validate take

* refactor(core): Adjust index handling in new migrations DSL (no-changelog) (#6876)

* refactor(core): Adjust index handling in new migrations DSL (no-changelog)

* Account for custom index name

* Also for dropping

* Fix `select` issue with `relations`

* Tighten validation

* Ensure `ownerId` is not added when specifying `select`

packages/cli/src/middlewares/listQuery/select.ts

@@ -0,0 +1,46 @@
+import { handleListQueryError } from './error';
+import { jsonParse } from 'n8n-workflow';
+import { WorkflowSchema } from './workflow.schema';
+import * as utils from '@/utils';
+import type { ListQueryRequest } from '@/requests';
+import type { RequestHandler } from 'express';
+import type { Schema } from '@/middlewares/listQuery/schema';
+
+function toQuerySelect(rawSelect: string, schema: typeof Schema) {
+	const asArr = jsonParse(rawSelect, { errorMessage: 'Failed to parse select JSON' });
+
+	if (!utils.isStringArray(asArr)) {
+		throw new Error('Parsed select is not a string array');
+	}
+
+	return asArr.reduce<Record<string, true>>((acc, field) => {
+		if (!schema.fieldNames.includes(field)) return acc;
+		return (acc[field] = true), acc;
+	}, {});
+}
+
+export const selectListQueryMiddleware: RequestHandler = (req: ListQueryRequest, res, next) => {
+	const { select: rawSelect } = req.query;
+
+	if (!rawSelect) return next();
+
+	let schema;
+
+	if (req.baseUrl.endsWith('workflows')) {
+		schema = WorkflowSchema;
+	} else {
+		return next();
+	}
+
+	try {
+		const select = toQuerySelect(rawSelect, schema);
+
+		if (Object.keys(select).length === 0) return next();
+
+		req.listQueryOptions = { ...req.listQueryOptions, select };
+
+		next();
+	} catch (error) {
+		handleListQueryError('select', rawSelect, error);
+	}
+};