…r error reporting

Version Updates:
- Bumped multiple plugin versions for configuration improvements:
  * rmqtt-acl: 0.1.2 → 0.1.3
  * rmqtt-auth-jwt: 0.1.1 → 0.1.2
  * rmqtt-http-api: 0.2.1 → 0.2.2
  * rmqtt-message-storage: 0.1.4 → 0.1.5
  * rmqtt-retainer: 0.1.2 → 0.1.3
  * rmqtt-session-storage: 0.2.1 → 0.2.2
  * rmqtt-sys-topic: 0.1.2 → 0.1.3

Configuration Improvements:
- **Default Configurations**: Added default rules and storage configurations
- **Better Error Messages**: Enhanced JWT auth error logging with token context
- **Storage Validation**: Added explicit error for missing storage engine specification

Key Changes:

1. **ACL Plugin**:
   - Added default ACL rules for dashboard and localhost access
   - Improved rule parsing with better error handling
   - Added toml dependency for configuration parsing

2. **Storage Plugins**:
   - Added default storage engine selection based on enabled features
   - Better error messages when no storage engine is configured
   - Changed storage fields to `Option<T>` with defaults

3. **Logging Improvements**:
   - Changed debug logs to info for better visibility of loaded configurations
   - Enhanced JWT error messages to include the problematic token

4. **Configuration API**:
   - Unified use of `read_config_default` for optional configurations
   - Maintained backward compatibility with existing config files

Benefits:
- **Out-of-box Experience**: Plugins work with sensible defaults
- **Better Debugging**: More informative error messages
- **Robustness**: Explicit handling of missing configurations
- **Maintainability**: Consistent configuration pattern across plugins