v0.9.0

Release v0.9.0

Assets:

• LanAudioRelay-win-x64-v0.9.0.zip: Windows x64 self-contained build
• LanAudioRelayMac-v0.9.0.app.zip: macOS app package

Verification:

• Windows: dotnet test passed (13 tests)
• macOS: swift test passed (8 tests)