Add a Credits menu. Fixes #2864.

mods/cnc/chrome/credits.yaml

@@ -0,0 +1,36 @@
+Container@CREDITS_PANEL:
+	Logic:CreditsLogic
+	X:(WINDOW_RIGHT - WIDTH)/2
+	Y:(WINDOW_BOTTOM - 400)/2
+	Width:400
+	Height:435
+	Children:
+		Label@CREDITS_TITLE:
+			Width:PARENT_RIGHT
+			Y:0-25
+			Font:BigBold
+			Contrast:true
+			Align:Center
+			Text:Credits
+		Background@bg:
+			Width:PARENT_RIGHT
+			Height:400
+			Background:panel-black
+			Children:
+				ScrollPanel@CREDITS_DISPLAY:
+					X:15
+					Y:15
+					Width:PARENT_RIGHT - 30
+					Height:PARENT_BOTTOM - 30
+					Children:
+						Label@CREDITS_TEMPLATE:
+							X:8
+							Height:16
+							VAlign:Top
+		Button@BACK_BUTTON:
+			X:PARENT_RIGHT-140
+			Y:400
+			Width:140
+			Height:35
+			Text:Back
+			Key:escape

mods/cnc/chrome/mainmenu.yaml

@@ -157,6 +157,12 @@ Container@MENU_BACKGROUND:
 							Width:140
 							Height:35
 							Text:Settings
+						Button@CREDITS_BUTTON:
+							X:450
+							Y:0
+							Width:140
+							Height:35
+							Text:Credits
 						Button@BACK_BUTTON:
 							Key:escape
 							X:600

mods/cnc/mod.yaml

@@ -77,6 +77,7 @@ ChromeLayout:
 	mods/cnc/chrome/music.yaml
 	mods/cnc/chrome/modchooser.yaml
 	mods/cnc/chrome/settings.yaml
+	mods/cnc/chrome/credits.yaml
 	mods/cnc/chrome/cheats.yaml
 	mods/cnc/chrome/dialogs.yaml
 	mods/cnc/chrome/objectives.yaml