loveplus: enable cam access (#318)

## Link to GitHub Issue, if one exists
#316 
(this does not fix the issue!)

## Description of change
Add an option to omit `-noCamera` option. Doing so allows the game to
boot and search for a compatible camera using KS API, but will likely
fail since we don't know what cameras are compatible. You end up with a
camera error during boot, which can be ignored by flipping a switch in
the test menu to disable the camera.

No hooks are currently done to make the camera work!

## Testing
Tested to see that turning this on triggers the camera error. No known
camera at the moment.

src/spice2x/launcher/launcher.cpp

@@ -1109,6 +1109,10 @@ int main_implementation(int argc, char *argv[]) {
         rawinput::MIDI_NOTE_SUSTAIN = options[launcher::Options::MidiNoteSustain].value_uint32();
     }
 
+    if (options[launcher::Options::LovePlusCamEnable].value_bool()) {
+        games::loveplus::CAMERA_ENABLE = true;
+    }
+
     // API debugging
     if (api_debug && !cfg::CONFIGURATOR_STANDALONE) {
         API_CONTROLLER = std::make_unique<api::Controller>(api_port, api_pass, api_pretty);