otoca: add cam hook, fix printer rotation (#573)

## Link to GitHub Issue or related Pull Request, if one exists
related to #154 though this PR doesn't fix it

## Description of change

1. Add an option for cam hook so that the game can be launched without
any camera
1. Rotate image printed out by print-to-file so that it's right side up
(portrait orientation)

## Testing
Able to boot the game without any cameras, and tested printing in test
menu.

"Holo" printing remains broken.

src/spice2x/games/io.cpp

@@ -256,6 +256,7 @@ namespace games {
         const std::string otoca("Otoca D'or");
         games.push_back(otoca);
         buttons.insert({ otoca, otoca::get_buttons() });
+        buttons_help.insert({ otoca, otoca::get_buttons_help() });
         file_hints[otoca].emplace_back("arkkep.dll");
 
         // winning eleven