Add Cosmos DB storage/cache option

[KennyZhang1]

Description

This PR adds CosmosDB support for the storage and cache options.

Related Issues

N/A

Changes

• Implemented a CosmosDBPipelineStorage class that extends the PipelineStorage base class to interface with CosmosDB
• Modified all steps of configuration loading to accommodate the new cosmosdb option for storage and cache
• Refactored storage and cache factory methods into factory classes
• Modified storage and cache factory classes to enable outside users to more easily register new storage/cache implementations
• Added integration tests using the CosmodDB emulator and updated the CI/CD pipeline accordingly

Checklist

• I have tested these changes locally.
• I have reviewed the code changes.
• I have updated the documentation (if necessary).
• I have added appropriate unit tests (if applicable).

Additional Notes

[Add any additional notes or context that may be helpful for the reviewer(s).]