DAW specific VST3

[mschnell1]

I intend to do a plugin dedicated for Reaper in Rust.
When researching I found ampli-Fe which seems promising as a starting point.
What I seem to need is

• VST3
• "DAW specific extension" to VST3. This obviously is not something ampli-Fe can help, but it's a VST (2+3=) thingy. Obviously I only can do research on that when I know I can use VST3.
  Regarding ampli-Fe based user interface: I need top do something like a left/right and up/down pannable spreadsheet that should live in a Window providing multiple tabs for showing certain aspects of the application. Is something like that sensible with WGPU or should I search for some other GUI crate ?

Thanks for any pointers,
-Michael