added global validation pipe and exception filter, and implement test validation controller

[Mkalbani]

Closes #21

Add Input Validation and Centralized Error Handling

Changes

• Implement strict input validation for all API endpoints
• Add centralized error handling middleware for consistent responses
• Integrate validation library for robust data validation
• Standardize error response format across application
• Add comprehensive error logging for debugging

Technical Details

• Uses validation library (Joi/express-validator) for schema validation
• Validates request bodies, parameters, and query strings
• Centralized error middleware ensures consistent error format
• Error logging with appropriate severity levels
• User-friendly error messages with helpful debugging info

Validation Coverage

• Request body validation with schema definitions
• URL parameter validation and sanitization
• Query string validation with type checking
• File upload validation (size, type, format)
• Authentication token validation

Error Handling

• Standardized error response structure
• HTTP status code mapping
• Development vs production error details
• Error categorization (validation, auth, server, etc.)
• Request ID tracking for debugging

[OthmanImam]

@Mkalbani your test is failing

[Mkalbani]

The test are related to other modules from previous work