adds x3 commands for refresh types

lib/GfxRenderer/GfxRenderer.h

@@ -70,6 +70,7 @@ class GfxRenderer {
   // Screen ops
   int getScreenWidth() const;
   int getScreenHeight() const;
+  void requestResync(uint8_t settlePasses = 0) const { display.requestResync(settlePasses); }
   void displayBuffer(HalDisplay::RefreshMode refreshMode = HalDisplay::FAST_REFRESH) const;
   // EXPERIMENTAL: Windowed update - display only a rectangular region
   // void displayWindow(int x, int y, int width, int height) const;

lib/hal/HalDisplay.cpp

@@ -38,6 +38,8 @@ void HalDisplay::refreshDisplay(HalDisplay::RefreshMode mode, bool turnOffScreen
   einkDisplay.refreshDisplay(convertRefreshMode(mode), turnOffScreen);
 }
 
+void HalDisplay::requestResync(uint8_t settlePasses) { einkDisplay.requestResync(settlePasses); }
+
 void HalDisplay::deepSleep() { einkDisplay.deepSleep(); }
 
 uint8_t* HalDisplay::getFrameBuffer() const { return einkDisplay.getFrameBuffer(); }

lib/hal/HalDisplay.h

@@ -36,6 +36,9 @@ class HalDisplay {
 
   void displayBuffer(RefreshMode mode = RefreshMode::FAST_REFRESH, bool turnOffScreen = false);
   void refreshDisplay(RefreshMode mode = RefreshMode::FAST_REFRESH, bool turnOffScreen = false);
+  // Hint the display driver to perform a one-shot full resync on next update.
+  // Optional settle passes are used by X3 only.
+  void requestResync(uint8_t settlePasses = 0);
 
   // Power management
   void deepSleep();