Add Jani lobby background (#28724)

* Add jani lobby background

* Actually make new lobby screen functional

* Fix license

Resources/Prototypes/lobbyscreens.yml

@@ -44,4 +44,8 @@
 
 - type: lobbyBackground
   id: JustAWeekAway
-  background: /Textures/LobbyScreens/justaweekaway.webp
+  background: /Textures/LobbyScreens/justaweekaway.webp
+
+- type: lobbyBackground
+  id: JaniShootout
+  background: /Textures/LobbyScreens/janishootout.webp

Resources/Textures/LobbyScreens/attributions.yml

@@ -46,4 +46,9 @@
 - files: ["justaweekaway.webp"]
   license: "CC-BY-SA-3.0"
   copyright: "plantyfern on discord"
+  source: "https://github.com/space-wizards/space-station-14"
+
+- files: ["janishootout.webp"]
+  license: "CC0-1.0"
+  copyright: "psychpsyo on Github/Twitter"
   source: "https://github.com/space-wizards/space-station-14"

Resources/Textures/LobbyScreens/janishootout.webp.yml

@@ -0,0 +1,2 @@
+sample:
+  filter: true