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)

TactilityC/Source/tt_app_selectiondialog.h

@@ -6,8 +6,15 @@
 extern "C" {
 #endif
 
+/**
+ * Start an app that displays a list of items and allows the user to select one.
+ * @param[in] title the title to show in the toolbar
+ * @param[in] argc the amount of items that the list contains
+ * @param[in] argv the labels of the items in the list
+ */
 void tt_app_selectiondialog_start(const char* title, int argc, const char* argv[]);
 
+/** @return the index of the item that was clicked by the user, or -1 when the user didn't select anything */
 int32_t tt_app_selectiondialog_get_result_index(BundleHandle handle);
 
 #ifdef __cplusplus