Scenario editor quality of life wishlist

[NQNStudios]

• When scrolling hits outdoor boundary, ask whether to load next section with camera positioned there.
• Add a "launch" option to the Scenario Editor calref/cboe#255
• special node menu allow "search for node type" to bring the correct page up

[NQNStudios]

Game plan for the "launch" button in scenario editor:

• add --scenario command-line argument to the game
  • process after the main argument, which is a party to load
  • resolve the absolute path of its argument and add the directory to all_scen_dirs() vector
  • If no party is provided at the command line, use force_party to load one
  • If the party is already in the scenario being edited, do nothing (keep SDF flags as they are saved)
  • If the party is not in the target scenario, put them in it
• add --town command-line argument to the game
  • processes after --scenario
  • require that the loaded party is in a scenario with the given town number
  • put them in it
• add --outdoors <x> <y> command-line argument to the game
  • processes after --scenario
  • require that the loaded party is in a scenario with the given outdoor section
  • put them in it
• add --location command-line argument to the game
  • process after all of the above arguments
  • move the party to the given location in the current town or outdoor section
• the scenario editor launch button will call a subprocess of the game with all the right arguments
• the scenario editor will need an option to specify a party for debugging