Rename plugins to external

applications/external/airmouse/tracking/main_loop.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef bool (*MouseMoveCallback)(int8_t x, int8_t y, void* context);
+
+void calibration_begin();
+bool calibration_step();
+void calibration_end();
+
+void tracking_begin();
+void tracking_step(MouseMoveCallback mouse_move, void* context);
+void tracking_end();
+
+#ifdef __cplusplus
+}
+#endif