Merge develop into main (#167)

- WiFi Connect app is now hidden by default, but accessible at the bottom of the WiFi Manage app when WiFi is turned on.
- WiFi service now turns on WiFi when calling connect() and WiFi is not on.
- Removed `blocking` option for `service::loader::startApp()`. This feature was unused and complex.
- Various apps: Moved private headers into Private/ folder.
- Various apps: created start() function for easy starting.
- Added documentation to all TactilityC APIs
- Refactored various `enum` into `class enum`
- Refactor M5Stack `initBoot()` (but VBus is still 0V for some reason)

TactilityHeadless/Source/hal/usb/Usb.h

@@ -2,10 +2,10 @@
 
 namespace tt::hal::usb {
 
-enum Mode {
-    ModeDefault, // Default state of USB stack
-    ModeNone, // State after TinyUSB was used and (partially) deinitialized
-    ModeMassStorageSdmmc
+enum class Mode {
+    Default, // Default state of USB stack
+    None, // State after TinyUSB was used and (partially) deinitialized
+    MassStorageSdmmc
 };
 
 bool startMassStorageWithSdmmc();