Add Azure Blob Storage store

[vishwamartur]

Related to #1542

Implement Azure Blob Storage (Azure Store) for NativeLink.

• Add Azure Store Implementation:

  • Create nativelink-store/src/azure_store.rs with Azure Blob Storage store implementation.
  • Use Azure SDK for Rust for interacting with Azure Blob Storage.
  • Implement StoreDriver trait for Azure Store.
  • Implement authentication using Azure SDK for Rust.
  • Implement chunked uploads for large files using put_block and put_block_list methods.

• Update Store Factory:

  • Modify nativelink-store/src/default_store_factory.rs to include Azure Store in the store factory function.

• Add Unit Tests:

  • Create nativelink-store/tests/azure_store_test.rs with unit tests for Azure Store.
  • Test basic CRUD operations, error handling, authentication process, and chunked upload functionality.

• Update Dependencies:

  • Modify nativelink-store/Cargo.toml to include necessary dependencies for Azure Blob Storage.

• Update Documentation:

  • Modify README.md to include information about the Azure store and how to configure it.
  • Add information about different types of blobs supported by the Azure store.

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[CLAassistant]

All committers have signed the CLA.

[vishwamartur]

cargo add azure_sdk_storage_blob tokio-retry