Fixes /bloodmagic network command permissions required for executing the command. (#1613)

Inheriting from CommandTreeBase, the required permission level was 4.
All other BloodMagic commands had a required permission level of 2.
This resulted in network command not able to be executed from a Command Block, which have a permission level of 2.

src/main/java/WayofTime/bloodmagic/command/sub/SubCommandNetwork.java

@@ -50,6 +50,11 @@ public class SubCommandNetwork extends CommandTreeBase {
         public SoulNetwork network;
         public String uuid;
 
+        @Override
+        public int getRequiredPermissionLevel() {
+            return 2;
+        }
+
         public Integer commandHelperAmount(MinecraftServer server, ICommandSender sender, String[] args) {
             int amount;
             if (args.length == 0)