Sample usage of proposed data streaming APIs

[corbin-phipps]

Type

• Bug fix
• Feature addition
• Feature update
• Documentation
• Build Infrastructure

Side Effects

• Breaking change
• Non-functional change

Goals

This draft PR shows sample usage of the proposed data streaming APIs in both the server (API implementations) and client (unit tests) sides.

Technical Details

• Added three new APIs: WifiDataStreamUpload, WifiDataStreamDownload, and WifiDataStreamBidirectional to NetRemoteCallbackService.proto, along with corresponding types in NetRemoteWifi.proto.
• Added NetRemoteCallbackService with sample implementations of the three APIs.
• Added TestNetRemoteCallbackServiceClient unit test file with unit tests for all three APIs.

Test Results

All tests pass.

Reviewer Focus

Overall design and usage.

Future Work

Once design is approved, APIs will be fully implemented and cleaned up, along with unit tests.

Checklist

• Build target all compiles cleanly.
• clang-format and clang-tidy deltas produced no new output.
• Newly added functions include doxygen-style comment block.