Split denyDirectAccess into separate options#33

Split denyDirectAccess as separate options for shops within the /shop GUI and direct access via /shop <player name> <shop name>. To have an NPC-based shop system at spawn, this requires restricting direct shop access, but the same restiction makes the GUI system useless when all shops in the GUI are restricted. For those who are not already familiar with it, DeluxeMenus has a huge learning curve, plus the additional step of knowing how to add opening requirements so players can’t bypass the entire system… basically having to recreate something that is already a part of SGP.

This suggestion was migrated from old suggestions made at the Discord server.