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/Private/Tactility/app/wificonnect/WifiConnect.h

@@ -19,9 +19,11 @@ class WifiConnect : public App {
         .onConnectSsidContext = nullptr
     };
     View view = View(&bindings, &state);
-    PubSub::SubscriptionHandle wifiSubscription;
+    PubSub<service::wifi::WifiEvent>::SubscriptionHandle wifiSubscription;
     bool view_enabled = false;
 
+    void onWifiEvent(service::wifi::WifiEvent event);
+
 public:
 
     WifiConnect();

Tactility/Private/Tactility/app/wifimanage/WifiManagePrivate.h

@@ -13,15 +13,15 @@ namespace tt::app::wifimanage {
 
 class WifiManage : public App {
 
-private:
-
-    PubSub::SubscriptionHandle wifiSubscription = nullptr;
+    PubSub<service::wifi::WifiEvent>::SubscriptionHandle wifiSubscription = nullptr;
     Mutex mutex;
     Bindings bindings = { };
     State state;
     View view = View(&bindings, &state);
     bool isViewEnabled = false;
 
+    void onWifiEvent(service::wifi::WifiEvent event);
+
 public:
 
     WifiManage();