Feature/vote map preview

[LordDz]

Shows a screenshot and a description of the selected map in the map vote list. Makes it easier to keep track of which map is which and lets users read the descriptions of the maps.

Will need to fill in with screenshots and text descriptions of the maps, but it'll be worth it.

Preview

Video - Scrolling through the list https://github.com/DarklightGames/DarkestHour/assets/6305945/b34ec2b3-9c7c-40ec-bf2a-82b9c77409ca

New screenshots of maps https://onedrive.live.com/?authkey=!AEg9qvWOBwLZV_k&id=FD580AAED2635056!195&cid=FD580AAED2635056