feat(server): add cloud indexer with Elasticsearch and Manticoresearch providers (#11835)

close CLOUD-137

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Introduced advanced workspace-scoped search and aggregation capabilities with support for complex queries, highlights, and pagination.
  - Added pluggable search providers: Elasticsearch and Manticoresearch.
  - New GraphQL queries, schema types, and resolver support for search and aggregation.
  - Enhanced configuration options for search providers in self-hosted and cloud deployments.
  - Added Docker Compose services and environment variables for Elasticsearch and Manticoresearch.
  - Integrated indexer service into deployment and CI workflows.

- **Bug Fixes**
  - Improved error handling with new user-friendly error messages for search provider and indexer issues.

- **Documentation**
  - Updated configuration examples and environment variable references for indexer and search providers.

- **Tests**
  - Added extensive end-to-end and provider-specific tests covering indexing, searching, aggregation, deletion, and error cases.
  - Included snapshot tests and test fixtures for search providers.

- **Chores**
  - Updated deployment scripts, Helm charts, and Kubernetes manifests to include indexer-related environment variables and secrets.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/backend/server/src/data/migrations/1745211351719-create-indexer-tables.ts

@@ -0,0 +1,16 @@
+import { ModuleRef } from '@nestjs/core';
+import { PrismaClient } from '@prisma/client';
+
+import { IndexerService } from '../../plugins/indexer';
+
+export class CreateIndexerTables1745211351719 {
+  static always = true;
+
+  // do the migration
+  static async up(_db: PrismaClient, ref: ModuleRef) {
+    await ref.get(IndexerService, { strict: false }).createTables();
+  }
+
+  // revert the migration
+  static async down(_db: PrismaClient) {}
+}

packages/backend/server/src/data/migrations/index.ts

@@ -5,3 +5,4 @@ export * from './1721299086340-refresh-unnamed-user';
 export * from './1732861452428-migrate-invite-status';
 export * from './1733125339942-universal-subscription';
 export * from './1738590347632-feature-redundant';
+export * from './1745211351719-create-indexer-tables';