st/oxr: Refactor out end frame function into own file

doc/changes/state_trackers/mr.847.2.md

@@ -0,0 +1 @@
+OpenXR: Break out end frame handling to it's own file since it's so big.

src/xrt/state_trackers/oxr/CMakeLists.txt

@@ -29,6 +29,7 @@ set(OXR_SOURCE_FILES
 	oxr_objects.h
 	oxr_path.c
 	oxr_session.c
+	oxr_session_frame_end.c
 	oxr_space.c
 	oxr_swapchain.c
 	oxr_system.c

src/xrt/state_trackers/oxr/meson.build

@@ -48,6 +48,7 @@ lib_st_oxr = static_library(
 		'oxr_objects.h',
 		'oxr_path.c',
 		'oxr_session.c',
+		'oxr_session_frame_end.c',
 		'oxr_session_gfx_gl.c',
 		'oxr_session_gfx_egl.c',
 		'oxr_session_gfx_vk.c',

src/xrt/state_trackers/oxr/oxr_objects.h

@@ -611,6 +611,12 @@ oxr_session_enumerate_formats(struct oxr_logger *log,
                               uint32_t *formatCountOutput,
                               int64_t *formats);
 
+/*!
+ * Change the state of the session, queues a event.
+ */
+void
+oxr_session_change_state(struct oxr_logger *log, struct oxr_session *sess, XrSessionState state);
+
 XrResult
 oxr_session_begin(struct oxr_logger *log, struct oxr_session *sess, const XrSessionBeginInfo *beginInfo);