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/i2c/I2cMock.cpp

@@ -28,9 +28,9 @@ bool init(const std::vector<i2c::Configuration>& configurations) {
    }
 
    for (const auto& config: configurations) {
-       if (config.initMode == InitByTactility && !start(config.port)) {
+       if (config.initMode == InitMode::ByTactility && !start(config.port)) {
            return false;
-       } else if (config.initMode == InitByExternal) {
+       } else if (config.initMode == InitMode::ByExternal) {
            dataArray[config.port].isStarted = true;
        }
    }