New board: Elecrow CrowPanel Basic 2.8" (#225)

- Implemented Elecrow CrowPanel Basic 2.8"
- Change default "invert" setting for ILI934x driver from `true` to `false`
- Created `Xpt2046` driver subproject
- Refactored unPhone to use new `Xpt2046` driver subproject

App/CMakeLists.txt

@@ -6,6 +6,7 @@ if (DEFINED ENV{ESP_IDF_VERSION})
     if("${IDF_TARGET}" STREQUAL "esp32")
         list(APPEND BOARD_COMPONENTS
             CYD-2432S024C
+            ElecrowCrowpanelBasic28
             M5stackCore2
         )
     endif()

App/Source/Boards.h

@@ -13,6 +13,9 @@
 #elif (defined(CONFIG_TT_BOARD_ELECROW_CROWPANEL_ADVANCE_28))
 #define TT_BOARD_HARDWARE &crowpanel_advance_28
 #include "CrowPanelAdvance28.h"
+#elif (defined(CONFIG_TT_BOARD_ELECROW_CROWPANEL_BASIC_28))
+#define TT_BOARD_HARDWARE &crowpanel_basic_28
+#include "CrowPanelBasic28.h"
 #elif defined(CONFIG_TT_BOARD_M5STACK_CORE2)
 #include "M5stackCore2.h"
 #define TT_BOARD_HARDWARE &m5stack_core2