Support scenarios

[Jazcash]

• [x] Parse and display scenarios from game content
• [x] Support changing faction
• [x] Support changing difficulty
• [ ] Save and display personal records

https://github.com/beyond-all-reason/Beyond-All-Reason/blob/master/singleplayer/scenarios/scenario000.lua https://github.com/beyond-all-reason/BYAR-Chobby/blob/b1fb5b4a60f91f5a214f43a64d07d4cdedb31a5b/LuaMenu/widgets/gui_scenario_window.lua#L677

[Jazcash]

Scenarios now implemented, but missing personal records because I don't believe there's any way for bar lobby to get this info currently. I believe Chobby can get this info because it has access to the Lua callins from the game, and SPADS can get the info via the AutohostInterface provided by the engine.

https://github.com/beyond-all-reason/Beyond-All-Reason/blob/master/luarules/gadgets/game_end.lua#L353 https://github.com/beyond-all-reason/BYAR-Chobby/blob/master/LuaMenu/widgets/gui_scenario_window.lua#L1089 https://github.com/beyond-all-reason/spring/blob/BAR105/rts/Net/AutohostInterface.cpp

The simplest solution for now might be having the game_end gadget send the needed info in a synced message (Spring.SendLuaRulesMsg), and then parsing that info from the replay.

[Jazcash]

Supposedly there is a local socket interface for spring.exe that we might be able to utilise to send data between the lobby and game