Merge develop into main (#327)

## New features
- Implemented support for app packaging in firmware and `tactility.py`: load `.app` files instead of `.elf` files. Install apps remotely or via `FileBrowser`.
- Ensure headless mode works: all services that require LVGL can deal with the absence of a display
- Service `onStart()` is now allowed to fail (return `bool` result)
- Added and improved various file-related helper functions

## Improvements
- Completely revamped the SystemInfo app UI
- Improved Calculator UI of internal and external variant
- Fix Chat UI and removed the emoji buttons for now
- Fix for toolbar bottom padding issue in all apps

## Fixes
- Fix for allowing recursive locking for certain SPI SD cards
& more

Tactility/Source/service/gps/GpsService.cpp

@@ -12,8 +12,8 @@ namespace tt::service::gps {
 constexpr const char* TAG = "GpsService";
 extern const ServiceManifest manifest;
 
-constexpr inline bool hasTimeElapsed(TickType_t now, TickType_t timeInThePast, TickType_t expireTimeInTicks) {
-    return (TickType_t)(now - timeInThePast) >= expireTimeInTicks;
+constexpr bool hasTimeElapsed(TickType_t now, TickType_t timeInThePast, TickType_t expireTimeInTicks) {
+    return (now - timeInThePast) >= expireTimeInTicks;
 }
 
 GpsService::GpsDeviceRecord* _Nullable GpsService::findGpsRecord(const std::shared_ptr<GpsDevice>& device) {
@@ -58,14 +58,14 @@ void GpsService::removeGpsDevice(const std::shared_ptr<GpsDevice>& device) {
     });
 }
 
-void GpsService::onStart(tt::service::ServiceContext& serviceContext) {
+bool GpsService::onStart(ServiceContext& serviceContext) {
     auto lock = mutex.asScopedLock();
     lock.lock();
-
     paths = serviceContext.getPaths();
+    return true;
 }
 
-void GpsService::onStop(tt::service::ServiceContext& serviceContext) {
+void GpsService::onStop(ServiceContext& serviceContext) {
     if (getState() == State::On) {
         stopReceiving();
     }