Don't Starve Together: add Steam Group settings (#506)

dont-starve-togetherconfig.json

@@ -324,6 +324,52 @@
         "DefaultValue": "Password123",
         "EnumValues": {}
     },
+    {
+        "DisplayName": "Enable Steam Group Only",
+        "Category": "Cluster Settings",
+        "Description": "If enabled, the server will only allow connections from players belonging to the Steam group listed in Steam Group ID",
+        "Keywords": "steam,group,only,steam_group_only",
+        "FieldName": "steam_group_only",
+        "InputType": "checkbox",
+        "IsFlagArgument": false,
+        "ParamFieldName": "steam_group_only",
+        "IncludeInCommandLine": false,
+        "DefaultValue": "false",
+        "EnumValues": {
+            "True": "true",
+            "False": "false"
+        }
+    },
+    {
+        "DisplayName": "Steam Group ID",
+        "Category": "Cluster Settings",
+        "Description": "Sets a [Steam group ID](https://forums.kleientertainment.com/topic/55994-server-admin-associate-your-server-with-a-steam-group/) for the Enable Steam Group Only and Steam Group Admins settings",
+        "Keywords": "steam,group,id,steam_group_id",
+        "FieldName": "steam_group_id",
+        "InputType": "number",
+        "IsFlagArgument": false,
+        "ParamFieldName": "steam_group_id",
+        "IncludeInCommandLine": false,
+        "DefaultValue": "0",
+        "Placeholder": "0",
+        "EnumValues": {}
+    },
+    {
+        "DisplayName": "Steam Group Admins",
+        "Category": "Cluster Settings",
+        "Description": "If enabled, admins of the steam group specified in Steam Group ID will also have admin status on the server",
+        "Keywords": "steam,group,admins,steam_group_admins",
+        "FieldName": "steam_group_admins",
+        "InputType": "checkbox",
+        "IsFlagArgument": false,
+        "ParamFieldName": "steam_group_admins",
+        "IncludeInCommandLine": false,
+        "DefaultValue": "false",
+        "EnumValues": {
+            "True": "true",
+            "False": "false"
+        }
+    },
     {
         "DisplayName": "Server Cluster Token (Required)",
         "Category": "Server Settings",

dont-starve-togethermetaconfig.json

@@ -5,7 +5,7 @@
 			{
 				"Heading": "NETWORK",
 				"SettingMappings": {
-					"server_port": "$ApplicationPort1",
+					"server_port": "$ApplicationPort1"
 				}
 			},
 			{
@@ -68,6 +68,14 @@
 					"master_port": "master_port",
 					"cluster_key": "cluster_key"
 				}
+			},
+			{
+				"Heading": "STEAM",
+				"SettingMappings": {
+					"steam_group_only": "steam_group_only",
+					"steam_group_id": "steam_group_id",
+					"steam_group_admins": "steam_group_admins"
+				}
 			}
 		]
 	},