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/timezone/TimeZone.cpp

@@ -3,7 +3,6 @@
 #include "Tactility/app/timezone/TimeZone.h"
 #include "Tactility/lvgl/Toolbar.h"
 #include "Tactility/lvgl/LvglSync.h"
-#include "Tactility/service/gui/Gui.h"
 #include "Tactility/service/loader/Loader.h"
 
 #include <Tactility/Partitions.h>
@@ -66,8 +65,6 @@ void setResultCode(Bundle& bundle, const std::string& code) {
 
 class TimeZoneApp : public App {
 
-private:
-
     Mutex mutex;
     std::vector<TimeZoneEntry> entries;
     std::unique_ptr<Timer> updateTimer;
@@ -107,7 +104,7 @@ private:
         setResultName(*bundle, entry.name);
         setResultCode(*bundle, entry.code);
 
-        setResult(app::Result::Ok, std::move(bundle));
+        setResult(Result::Ok, std::move(bundle));
 
         service::loader::stopApp();
     }
@@ -221,7 +218,6 @@ public:
         lv_obj_add_event_cb(textarea, onTextareaValueChangedCallback, LV_EVENT_VALUE_CHANGED, this);
         filterTextareaWidget = textarea;
         lv_obj_set_flex_grow(textarea, 1);
-        service::gui::keyboardAddTextArea(textarea);
 
         auto* list = lv_list_create(parent);
         lv_obj_set_width(list, LV_PCT(100));