Touch and display driver subsystems reworked (and more) (#302)

- Refactored `TouchDevice`: it can now start/stop LVGL separately, and it has an optional `TouchDriver` interface
- Refactored `DisplayDevice`: it can now start/stop LVGL separately, and it has an optional `DisplayDriver` interface
- Updated all boards and drivers for above changes
- LVGL can now be stopped and (re)started on the fly
- Fixed issues with restarting Gui and Statusbar services
- Refactored `Gui` service to be class and renamed `Gui` to `GuiService`
- Fixed `Statusbar` service: forgot to deregister one of the icons
- Updated `esp_lcd_st7701` to v1.1.3
- `lv_textarea_create()` now automatically registers the hardware keyboard hooks (by wrapping the function)
- Fixed and updated `tactility.py`
- Cleanup of a lot of code
- `BootInitLvglBegin` and `BootInitLvglEnd` are replaced by `LvglStarted` and `LvglStopped`.
- Introduced `tt::service::State` which is accessible via `tt::service::getState()` (and internally via `ServiceInstance`)
- Started replacing `#define TAG` with `constexpr auto TAG = "..";`

Tactility/Source/lvgl/Wrappers.cpp

@@ -0,0 +1,26 @@
+#ifdef ESP_PLATFORM
+
+#include "Tactility/app/App.h"
+#include "Tactility/service/gui/GuiService.h"
+
+#include <lvgl.h>
+#include <Tactility/service/gui/GuiService.h>
+
+extern "C" {
+
+extern lv_obj_t * __real_lv_textarea_create(lv_obj_t * parent);
+
+lv_obj_t * __wrap_lv_textarea_create(lv_obj_t * parent) {
+    auto textarea = __real_lv_textarea_create(parent);
+
+    auto gui_service = tt::service::gui::findService();
+    if (gui_service != nullptr) {
+        gui_service->keyboardAddTextArea(textarea);
+    }
+
+    return textarea;
+}
+
+}
+
+#endif // ESP_PLATFORM