feat(logging): hash IP addresses in logs and Sentry integration

- Implemented IP hashing using SHA256 in logs for enhanced privacy.
- Updated Sentry integration to hash IP addresses before sending events.
- Enhanced `AllExceptionsFilter` and `crawler-detection.middleware` to use hashed IPs in logs and error handling.
- Refined request logging in `auth.service` to include hashed email instead of plain text email.

backend/src/auth/auth.service.ts

@@ -103,10 +103,9 @@ export class AuthService {
 	}
 
 	async login(dto: LoginDto, userAgent?: string, ip?: string) {
-		this.logger.log(`Login attempt for email: ${dto.email}`);
+		const emailHash = await this.hashingService.hashEmail(dto.email);
+		this.logger.log(`Login attempt for email hash: ${emailHash}`);
 		const { email, password } = dto;
-
-		const emailHash = await this.hashingService.hashEmail(email);
 		const user = await this.usersService.findByEmailHash(emailHash);
 
 		if (!user) {