Add LEDControl.init_mode()

The new `init_mode()` method simply (re-)inits the current mode. Useful when a
plugin that changes LEDs outside of LED modes wants to reset the active LED
mode. Doubly useful when the active LED mode does all the work in its `init()`
method.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

src/Kaleidoscope-LEDControl.cpp

@@ -51,6 +51,12 @@ LEDControl_::update(void) {
   previousMode = mode;
 }
 
+void
+LEDControl_::init_mode(void) {
+  if (modes[mode])
+    (modes[mode]->init)();
+}
+
 void
 LEDControl_::set_mode(uint8_t mode_) {
   if (mode_ < LED_MAX_MODES)

src/Kaleidoscope-LEDControl.h

@@ -28,6 +28,7 @@ class LEDControl_ : public KaleidoscopePlugin {
   static void update(void);
   static void set_mode(uint8_t mode);
   static uint8_t get_mode();
+  static void init_mode(void);
 
   static int8_t mode_add(LEDMode *mode);