Begin work integrating pyopenxr

pyopenvr is deprecated and is causing a user issue
(#2).

That user was kind enough to experiment with different configs and
didn't find a simple fix. So let's close this tech debt issue the right
way.

Scripts/steamvr_v2.py

@@ -0,0 +1,84 @@
+from ctypes import cast, c_void_p, pointer
+import xr
+
+inst = xr.create_instance()
+print(f"inst: {inst}")
+
+system_get_info = xr.SystemGetInfo(
+        form_factor=xr.FormFactor.HEAD_MOUNTED_DISPLAY)
+system_id = xr.get_system(
+        instance=inst,
+        get_info=system_get_info)
+print(f"system_id: {system_id}")
+
+gfx_binding = xr.GraphicsBindingOpenGLWin32KHR()
+gfx_binding_ptr = cast(pointer(gfx_binding), c_void_p)
+session_info = xr.SessionCreateInfo(
+        system_id=system_id,
+        next=gfx_binding_ptr)
+# TODO some issue with graphics binding.
+session = xr.create_session(
+        instance=inst,
+        create_info=session_info)
+
+action_set_info = xr.ActionSetCreateInfo(
+        action_set_name="tastt_actions",
+        localized_action_set_name="TaSTT_Actions",  # ignore internationalization for now
+        priority=0)
+print(f"action_set_info: {action_set_info}")
+
+action_set = xr.create_action_set(
+        instance=inst,
+        create_info=action_set_info)
+print(f"action_set: {action_set}")
+
+action_create_info = xr.ActionCreateInfo(
+        action_name="tastt_click",
+        localized_action_name="TaSTT_Click",
+        action_type=xr.ActionType.BOOLEAN_INPUT)
+print(f"action_create_info: {action_create_info}")
+
+print(dir(xr.create_action))
+action = xr.create_action(
+        action_set=action_set,
+        create_info=action_create_info)
+print(f"action: {action}")
+
+input_path = xr.string_to_path(instance=inst, path_string="/user/hand/right/input/trigger/click")
+print(f"input_path: {input_path}")
+
+actions = xr.ActionSuggestedBinding(
+        action=action,
+        binding=input_path)
+print(f"actions: {actions}")
+
+interaction_profile_path = xr.string_to_path(instance=inst, path_string="/interaction_profiles/valve/index_controller")
+print(f"interaction_profile_path: {interaction_profile_path}")
+
+bindings = xr.InteractionProfileSuggestedBinding(
+        interaction_profile=interaction_profile_path,
+        count_suggested_bindings=1,
+        suggested_bindings=[actions])
+print(f"bindings: {bindings}")
+
+xr.suggest_interaction_profile_bindings(
+        instance=inst,
+        suggested_bindings=bindings)
+
+while True:
+    action_info = xr.ActionStateGetInfo(
+            action=action)
+
+    action_bool = xr.get_action_state_boolean(
+            session=session,
+            get_info=action_info)
+
+    break
+
+xr.destroy_instance(inst)
+
+# Paths:
+# /usr/hand/{left,right}/input/{a,b,thumbstick}/{click,touch}
+
+print("Done!")
+