Add game speed dropdown to the lobby.

mods/d2k/chrome/lobby-dialogs.yaml

@@ -151,6 +151,19 @@ Background@LOBBY_OPTIONS_BIN:
 					Width: 140
 					Height: 20
 					Text: Debug Menu
+				Label@DIFFICULTY_DESC:
+					X: PARENT_RIGHT - WIDTH - 145
+					Y: 70
+					Width: 120
+					Height: 25
+					Text: Mission Difficulty:
+					Align: Right
+				DropDownButton@DIFFICULTY_DROPDOWNBUTTON:
+					X: PARENT_RIGHT - WIDTH
+					Y: 70
+					Width: 140
+					Height: 25
+					Font: Regular
 				Label@STARTINGCASH_DESC:
 					Y: 110
 					Width: 80
@@ -177,19 +190,6 @@ Background@LOBBY_OPTIONS_BIN:
 					Width: 140
 					Height: 25
 					Font: Regular
-				Label@DIFFICULTY_DESC:
-					X: PARENT_RIGHT - WIDTH - 145
-					Y: 150
-					Width: 120
-					Height: 25
-					Text: Mission Difficulty:
-					Align: Right
-				DropDownButton@DIFFICULTY_DROPDOWNBUTTON:
-					X: PARENT_RIGHT - WIDTH
-					Y: 150
-					Width: 140
-					Height: 25
-					Font: Regular
 				DropDownButton@TECHLEVEL_DROPDOWNBUTTON:
 					X: 85
 					Y: 150
@@ -203,6 +203,19 @@ Background@LOBBY_OPTIONS_BIN:
 					Height: 25
 					Text: Tech Level:
 					Align: Right
+				Label@GAMESPEED_DESC:
+					X: PARENT_RIGHT - WIDTH - 145
+					Y: 150
+					Width: 120
+					Height: 25
+					Text: Game Speed:
+					Align: Right
+				DropDownButton@GAMESPEED_DROPDOWNBUTTON:
+					X: PARENT_RIGHT - WIDTH
+					Y: 150
+					Width: 140
+					Height: 25
+					Font: Regular
 
 Background@FORCE_START_DIALOG:
 	X: 20

mods/d2k/mod.yaml

@@ -193,3 +193,21 @@ SupportsMapsFrom: d2k
 SpriteFormats: R8, ShpTD, TmpRA
 
 SpriteSequenceFormat: DefaultSpriteSequence
+
+GameSpeeds:
+	slower:
+		Name: Slower
+		Timestep: 50
+		OrderLatency: 3
+	default:
+		Name: Default
+		Timestep: 40
+		OrderLatency: 3
+	faster:
+		Name: Faster
+		Timestep: 30
+		OrderLatency: 4
+	fastest:
+		Name: Fastest
+		Timestep: 20
+		OrderLatency: 6