CoreS3 refactored & remove M5 libraries (#143)

Remove dependencies M5Unified and M5GFX because:
- Sometimes the release doesn't even compile
- The amount of functions is too close to the limit (I recently had to remove some code/dependency to be able to make a build at all)
- Graphics performance issue since last update
- Touch screen performance issues (not perfect yet, but better)
- Compatibility issues with Tactility SPI/I2C versus M5Unified/M5GFX variants.

CMakeLists.txt

@@ -15,9 +15,6 @@ if (DEFINED ENV{ESP_IDF_VERSION})
     add_definitions(-DESP_TARGET)
     add_compile_definitions(ESP_TARGET)
 
-    add_definitions(-DARDUINO_M5STACK_CORE2)
-    add_compile_definitions(ARDUINO_M5STACK_CORE2)
-
     set(COMPONENTS App)
     set(EXTRA_COMPONENT_DIRS
         "Boards"
@@ -30,8 +27,6 @@ if (DEFINED ENV{ESP_IDF_VERSION})
         "Libraries/elf_loader"
         "Libraries/lvgl"
         "Libraries/lv_screenshot"
-        "Libraries/M5Unified"
-        "Libraries/M5GFX"
         "Libraries/QRCode"
     )