Merge develop into main (#313)

- Add app path get() functions to `TactilityC`
- Improved `Dispatcher` and `DispatcherThread`
- Improved `PubSub` (type safety)
- Created test for `DispatcherThread` and `PubSub`
- Save properties files on app exit (various apps) by posting it to the main dispatcher (fixes UI hanging briefly on app exit)
- Fixed bug with `SystemSettings` being read from the wrong file path.
- `loadPropertiesFile()` now uses `file::readLines()` instead of doing that manually
- Increased timer task stack size (required due to issues when reading a properties file for the very first time)
- General cleanup
- Created `EstimatedPower` driver that uses an ADC pin to measure voltage and estimate the battery charge that is left.
- Cleanup of T-Deck board (updated to new style)

Tactility/Source/app/screenshot/Screenshot.cpp

@@ -1,19 +1,18 @@
-#include "Tactility/TactilityConfig.h"
+#include <Tactility/Tactility.h>
+#include <Tactility/TactilityConfig.h>
 
 #include <Tactility/Timer.h>
 #include <Tactility/kernel/Kernel.h>
 
 #if TT_FEATURE_SCREENSHOT_ENABLED
 
-#include "Tactility/app/App.h"
-#include "Tactility/app/AppManifest.h"
-#include "Tactility/lvgl/LvglSync.h"
-#include "Tactility/lvgl/Toolbar.h"
-#include "Tactility/service/screenshot/Screenshot.h"
+#include <Tactility/app/App.h>
+#include <Tactility/app/AppManifest.h>
+#include <Tactility/lvgl/LvglSync.h>
+#include <Tactility/lvgl/Toolbar.h>
+#include <Tactility/service/screenshot/Screenshot.h>
 
-#include <Tactility/TactilityHeadless.h>
-
-#define TAG "screenshot"
+constexpr auto* TAG = "Screenshot";
 
 namespace tt::app::screenshot {