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)

TactilityCore/Source/Dispatcher.cpp

@@ -15,7 +15,7 @@ Dispatcher::~Dispatcher() {
     mutex.unlock();
 }
 
-void Dispatcher::dispatch(Function function, TickType_t timeout) {
+bool Dispatcher::dispatch(Function function, TickType_t timeout) {
     // Mutate
     if (mutex.lock(timeout)) {
         queue.push(std::move(function));
@@ -25,8 +25,10 @@ void Dispatcher::dispatch(Function function, TickType_t timeout) {
         tt_check(mutex.unlock());
         // Signal
         eventFlag.set(WAIT_FLAG);
+        return true;
     } else {
         TT_LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED);
+        return false;
     }
 }