feat: add ESLint flat config, Prettier, dependency-cruiser, and Husky

Setup code quality tooling for the monorepo:
- ESLint 9 flat config with TypeScript, import ordering, and NestJS rules
- Prettier with consistent formatting across all files
- dependency-cruiser enforcing module boundary rules (no cross-module internals, no circular deps)
- Husky + lint-staged for pre-commit hooks
- Auto-fixed existing files for type imports and import ordering

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/modules/shared/infrastructure/logger.service.ts

@@ -1,5 +1,5 @@
-import { Injectable, LoggerService as NestLoggerService } from '@nestjs/common';
-import pino, { Logger } from 'pino';
+import { Injectable, type LoggerService as NestLoggerService } from '@nestjs/common';
+import pino, { type Logger } from 'pino';
 
 @Injectable()
 export class LoggerService implements NestLoggerService {