chore: add techbase to apps-archived

Integrated techbase (software comparison platform) into monorepo structure:
- Created NestJS backend with votes and comments modules
- Migrated from external Supabase to own PostgreSQL
- Set up Drizzle ORM schema for votes and comments
- Created API client replacing Supabase in Astro frontend
- Added environment configuration (port 3021)

Archived immediately as it's not yet ready for active development.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps-archived/techbase/apps/backend/src/comments/comments.module.ts

@@ -0,0 +1,10 @@
+import { Module } from '@nestjs/common';
+import { CommentsController, AdminCommentsController } from './comments.controller';
+import { CommentsService } from './comments.service';
+
+@Module({
+	controllers: [CommentsController, AdminCommentsController],
+	providers: [CommentsService],
+	exports: [CommentsService],
+})
+export class CommentsModule {}