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)

TactilityCore/Source/Mutex.h

@@ -21,9 +21,9 @@ class Mutex : public Lockable {
 
 public:
 
-    enum Type {
-        TypeNormal,
-        TypeRecursive,
+    enum class Type {
+        Normal,
+        Recursive,
     };
 
 private:
@@ -33,7 +33,7 @@ private:
 
 public:
 
-    explicit Mutex(Type type = TypeNormal);
+    explicit Mutex(Type type = Type::Normal);
     ~Mutex() override;
 
     /** Attempt to lock the mutex. Blocks until timeout passes or lock is acquired.