Improve task management

[nick42d]

Introduces 2 new crates:
async-rodio-sink: Encapsulates our asynchronous rodio wrapper.
async-callback-manager: Provides a callback manger that easily allows bottom level components to lodge callbacks and callback handlers with a central manager that manages constraints.

[nick42d]

Note: Unusual crash noted when trying to change volume rapidly.
Resolved in #50673f7