add drawTextWithShadow functionality for Inkplate 2

Author: JosipKuci

src/graphics/Shapes/Shapes.h

@@ -45,6 +45,10 @@ class Shapes : virtual public Adafruit_GFX
     void drawThickLine(int x1, int y1, int x2, int y2, int color, float thickness);
     void drawGradientLine(int x1, int y1, int x2, int y2, int color1, int color2, float thickness = -1);
 
+    #if defined(ARDUINO_INKPLATE2) || defined(ARDUINO_INKPLATE4) || defined(ARDUINO_INKPLATE7)
+      void drawTextWithShadow(int x, int y, const char *_text, uint8_t _colorText, uint8_t _colorShadow);
+    #endif
+
   private:
     struct EdgeBucket
     {