Adventure: implement new game (#1531)

Adds Adventure for the Atari 2600, NTSC version. New randomizer, not based on prior works. Somewhat atypical of current AP rom patch games; The generator does not require the adventure rom, but writes some data to an .apadvn APContainer file that the client uses along with a base bsdiff patch to generate a final rom file.

host.yaml

@@ -168,3 +168,22 @@ zillion_options:
   # You have to know the path to the emulator core library on the user's computer.
   rom_start: "retroarch"
 
+adventure_options:
+  # File name of the standard NTSC Adventure rom.
+  # The licensed "The 80 Classic Games" CD-ROM contains this.
+  # It may also have a .a26 extension
+  rom_file: "ADVNTURE.BIN"
+  # Set this to false to never autostart a rom (such as after patching)
+  # True for operating system default program for '.a26'
+  # Alternatively, a path to a program to open the .a26 file with (generally EmuHawk for multiworld)
+  rom_start: true
+  # Optional, additional args passed into rom_start before the .bin file
+  # For example, this can be used to autoload the connector script in BizHawk
+  # (see BizHawk --lua= option)
+  rom_args: " "
+  # Set this to true to display item received messages in Emuhawk
+  display_msgs: true
+
+
+
+