Add wait support for tests

tmk_core/common/test/timer.c

@@ -28,4 +28,8 @@ uint16_t timer_elapsed(uint16_t last) { return TIMER_DIFF_16(timer_read(), last)
 uint32_t timer_elapsed32(uint32_t last) { return TIMER_DIFF_32(timer_read32(), last); }
 
 void set_time(uint32_t t) { current_time = t; }
-void advance_time(uint32_t ms) { current_time += ms; }
+void advance_time(uint32_t ms) { current_time += ms; }
+
+void wait_ms(uint32_t ms) {
+    advance_time(ms);
+}