Terraria - Allow changing steamcmd beta branch (#335)

* Allow changing steamcmd beta branch
Use more readable update sources

* Update tmodloaderconfig.json

* Update tmodloader14config.json

* Update tmodloaderconfig.json

* Update tmodloader14config.json

---------

Co-authored-by: IceOfWraith <96364530+IceOfWraith@users.noreply.github.com>

tmodloaderconfig.json

@@ -94,7 +94,7 @@
     },
     {
         "DisplayName": "Update Source",
-        "Category": "Terraria ModLoader Settings",
+        "Category": "SteamCMD and Updates",
         "Keywords": "download,source,steam,github,tmodloader",
         "Description": "Select where to obtain tModLoader. Steam requires you to own [Terraria](https://store.steampowered.com/app/105600/Terraria/) & [tModLoader](https://store.steampowered.com/app/1281930/tModLoader/) on your account and accept tModLoader's ToS by installing it as a game to a device you can login from.",
         "FieldName": "Source",
@@ -106,6 +106,19 @@
         },
         "DefaultValue": "GitHub"
     },
+    {
+        "DisplayName":"Server Branch",
+        "Category":"SteamCMD and Updates",
+        "Description":"Sets the beta branch to install. NOTE: Update Source MUST be Steam. Press update AFTER changing this setting.",
+        "Keywords":"branch,depot,beta,steam,version",
+        "FieldName":"BetaBranch",
+        "InputType":"text",
+        "IsFlagArgument":false,
+        "ParamFieldName":"BetaBranch",
+        "IncludeInCommandLine":false,
+        "DefaultValue":"1.3-legacy",
+        "placeholder": "1.3-legacy"
+    },
     {
         "DisplayName": "World Path",
         "Category": "Terraria Server Settings",
@@ -294,4 +307,4 @@
         "ParamFieldName": "announcementboxrange",
         "DefaultValue": "-1"
     }
-]
+]