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/app/screenshot/Screenshot.cpp

@@ -9,8 +9,6 @@
 #include "Tactility/app/AppManifest.h"
 #include "Tactility/lvgl/LvglSync.h"
 #include "Tactility/lvgl/Toolbar.h"
-#include "Tactility/service/gui/Gui.h"
-#include "Tactility/service/loader/Loader.h"
 #include "Tactility/service/screenshot/Screenshot.h"
 
 #include <Tactility/TactilityHeadless.h>
@@ -39,7 +37,7 @@ class ScreenshotApp final : public App {
 public:
 
     ScreenshotApp();
-    ~ScreenshotApp() final;
+    ~ScreenshotApp();
 
     void onShow(AppContext& app, lv_obj_t* parent) override;
     void onStartPressed();
@@ -271,9 +269,6 @@ void ScreenshotApp::onShow(AppContext& appContext, lv_obj_t* parent) {
     createFilePathWidgets(wrapper);
     createTimerSettingsWidgets(wrapper);
 
-    service::gui::keyboardAddTextArea(delayTextArea);
-    service::gui::keyboardAddTextArea(pathTextArea);
-
     updateScreenshotMode();
 
     if (!updateTimer->isRunning()) {