add focus project, fix recovery save on ui thread, fix grid commit, wave_sdk submodule, use PlatformActivity as base for android/quest/focus and extend VRActivity on focus.

android/focus/src/main/cpp/wave_vr.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <wvr/wvr.h>
+#include <wvr/wvr_render.h>
+#include <wvr/wvr_device.h>
+#include <wvr/wvr_projection.h>
+#include <wvr/wvr_overlay.h>
+#include <wvr/wvr_system.h>
+#include <wvr/wvr_events.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <android/window.h>
+
+void wave_init(JavaVM* vm, JNIEnv* jni, jobject activity_class);
+void wave_init_vr(EGLDisplay display, EGLContext context, ANativeWindow* surface);
+void wave_release_vr();
+void wave_draw(float dt);