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/options.cpp

@@ -2249,6 +2249,15 @@ static const std::vector<OptionDefinition> OPTION_DEFINITIONS = {
         .type = OptionType::Bool,
         .game_name = "Sound Voltex",
         .category = "Graphics (Windowed)",
+    },
+    {
+        // LovePlusCamEnable
+        .title = "LovePlus Camera Enable",
+        .name = "lovepluscam",
+        .desc = "Allow game to access camera; camera must be compatible with game",
+        .type = OptionType::Bool,
+        .game_name = "LovePlus",
+        .category = "Game Options",
     }
 };