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/service/wifi/WifiSettings.h

@@ -11,9 +11,9 @@ namespace tt::service::wifi::settings {
  * This makes it easier to use the char array as a string in various places.
  */
 struct WifiApSettings {
-    char ssid[TT_WIFI_SSID_LIMIT + 1];
-    char password[TT_WIFI_CREDENTIALS_PASSWORD_LIMIT + 1];
-    bool auto_connect;
+    char ssid[TT_WIFI_SSID_LIMIT + 1] = { 0 };
+    char password[TT_WIFI_CREDENTIALS_PASSWORD_LIMIT + 1] = { 0 };
+    bool auto_connect = true;
 };
 
 bool contains(const char* ssid);