Support Audio Content tool response

[ghchinoy]

Currently, CallToolResult appears to support only Text, Image, and Embedded Resource. The spec also notes an Audio type as a response.

https://modelcontextprotocol.io/specification/2025-03-26/server/tools#tool-result

[dugenkui03]

audio content is also supported in prompts/get

https://modelcontextprotocol.io/specification/2025-03-26/server/prompts#audio-content

[ghchinoy]

👍🏽 Looks like #250 is merged though not in latest release. Looking forward to the new release!

[rwjblue-glean]

Will work on getting a release out soon. Thank you!