Lua: AddTeam / AddMissionTeam now return team index

Remove unused vars in uTeams

Lua API: Add functions to add team selected in campaign/mission page

remove if disabled in main config

Keep track of singleplayer high scores in challenges

Add fallback preview image for scenarios Feel free to improve the image

Add image for challenges

Disable caption and FollowGear for crates that spawn before 1st turn (useful for missions)

Tweak training menu spacing

Save and restore last campaign/training team selection in settings.ini

Sync team comboboxes in campaign and training page

Training page: Don't change selection after changing team or playing

Update training page after completing a training

Fix victory check of a few scenarios

Add Lua callback: onGameResult

Report mission victory for most missions

Add Lua functions to save/get mission variables

Add team selection in training page and basic check mark support

Attempt to allow building video recording in pas2c mode, currently fails parsing

if a script is set, feature size can generate different maps

Same with ShoppaMap

fix DiagonalMaze after the drawing scaling change, add some params since ginormous maze is kinda entertaining

Apply rustfmt to all files

Start database interaction implementation

Rope training: Simplify final challenge, remove mines

Rope training: Show hint after destroying barrels

Make various stunts in flying saucer training easier

Movement training: Show damage message only after passing certain point