Various updates

RM68120 support for RP2040 added
Various other updates and typo corrections

Extensions/Button.h

@@ -6,8 +6,8 @@
 // within button
 ***************************************************************************************/
 
-class TFT_eSPI_Button : public TFT_eSPI {
-
+class TFT_eSPI_Button
+{
  public:
   TFT_eSPI_Button(void);
   // "Classic" initButton() uses centre & size

Extensions/Sprite.cpp

@@ -375,7 +375,7 @@ void TFT_eSprite::deleteSprite(void)
   if (_colorMap != nullptr)
   {
     free(_colorMap);
-	  _colorMap = nullptr;
+    _colorMap = nullptr;
   }
 
   if (_created)