In our model we have a "subpath" for each hardware input like "/input/trackpad".
Each of these hardware inputs has "features" like "click", "touch", "position", "force".
Ideally each of these "features" is bound to some monado input in the "monado_bindings" dict
but this is not required. bindings.json will know about hardware features even if we don't bind them (yet).
For each of these features bindings.py generates a group of related paths for a single monado binding:
For a monado input XRT_INPUT_???_TRACKPAD these paths would be generated:
/user/hand/left/input/trackpad/x
/user/hand/left/input/trackpad/y
/user/hand/left/input/trackpad
The generated files should be in auxiliary/bindings/*.{c,h}. For this to work
meson.build has to be in the bindings/ subdir:
https://github.com/mesonbuild/meson/issues/2320
Move CMakeLists.txt there too for some consistency.
Also fixes the previous include hack.
Move json profile generator to auxiliary/bindings and make generated_bindings static library.
aux/bindings: Add hardware type
aux/bindings: Add various steamvr specific things to bindings
Paths like "/input/menu/click" are used in SteamVR input profiles.
