[ENHANCEMENT] Integrate with the OSARA plugin, make Ultraschall accessible to blind podcasters

[MarcoZehe]

Is your feature request related to a problem? Please describe.

Ultraschall is currently not very accessible to blind podcasters. All the benefits therefore aren't available to us that Ultraschall offers.

Describe the solution you'd like

The OSARA plugin allows blind people to use Reaper. It enhances the UI in several ways, adds custom actions and keyboard shortcuts to make working with Reaper an absolute breeze.

It also shows several techniques that could be used in Ultraschall to make it accessible. It is a safe bet to assume that, if OSARA is installed, there is a visually impaired user using Reaper. Therefore, Ultraschall could include conditional enhancements and use the annotations techniques in reaper_osara.cpp to roll their own annotations for controls that are currently inaccessible.

Describe alternatives you've considered

There are really none. For accessibility to work, there must be certain APIs used that communicate otherwise purely visual meaning to screen readers and other assistive technologies.

Additional context

Putting this here in English even though I am German and the project is mostly in German, so the original author of OSARA can be included in the discussion if need be. He's from Australia and doesn't speak German.