Introduce Steinberg ASIO (Audio Streaming Input/Output) plugin
Adds a new plugin for ASIO devices.
Although there is a standard low-level audio API, WASAPI, on Windows, ASIO is still being broadly used for audio devices which are aiming to professional use case. In case of such devices, ASIO API might be able to show better quality and latency performance depending on manufacturer's driver implementation.
In order to build this plugin, user should provide path to ASIO SDK as a build option, "asio-sdk-path".