Proposal: Add MariaDB Provider with ColumnStore and S3 Support

### Description ## Proposal: MariaDB Provider for Apache Airflow ### Overview I would like to contribute a comprehensive MariaDB provider to Apache Airflow that includes: - Native MariaDB connector support - ColumnStore engine integration - Bulk data loading with cpimport utility - S3 integration for data transfer - SSH-based remote execution ### Why a Separate MariaDB Provider? While MySQL provider exists, MariaDB has unique features that justify a dedicated provider: 1. **Native MariaDB Connector**: Uses `mariadb` library instead of generic MySQL connector 2. It is seen that using Native Mariadb as a python connector performs 2-3x better for operations like insert_many, json handling and select queries. 3. **cpimport Utility**: Bulk loading functionality specific to MariaDB ColumnStore 4. **ColumnStore Engine Support**: Validation and optimization for ColumnStore tables 5. **S3 Integration**: Direct S3 load/dump operations 6. **SSH Integration**: Remote execution capabilities ### Components Included - **MariaDBHook**: Main hook with native connector support - **MariaDBOperator**: SQL execution operator - **MariaDBCpImportOperator**: Bulk data loading for ColumnStore - **MariaDBS3LoadOperator**: Load data from S3 to MariaDB - **MariaDBS3DumpOperator**: Export MariaDB data to S3 - **Comprehensive test suite** with 95%+ coverage - **Example DAGs** for all features - **Complete documentation** ### Dependencies - `mariadb>=1.1.0` (native connector) - `boto3>=1.26.0` (S3 integration) - `paramiko>=2.7.0` (SSH support) ### Implementation Status ✅ Complete provider implementation ✅ Comprehensive test suite ✅ Example DAGs ✅ Documentation ✅ Apache License headers ✅ Type hints throughout ### Questions for Community 1. Is there interest in a dedicated MariaDB provider? 2. Are there any specific requirements or concerns? 3. Should I proceed with creating a pul…