Remove commands from autocomplete/help list that cannot be run (#2602)

* only tabcomplete for commands the sender has permission for

* set permission defaults for spigot

* Make velocity autocomplete on arg length 0 and 1

* fix advancements perm in spigot plugin.yml and add settings perm

(whoops)

* don't show bedrock commands to java players

* modify spigot perm defaults

* censor help menu, abstract tab complete code

* Bedrock players don't get cmd argument suggestions

* update spigot plugin.yml

bootstrap/sponge/src/main/java/org/geysermc/platform/sponge/command/GeyserSpongeCommandExecutor.java

@@ -40,8 +40,8 @@ import org.spongepowered.api.world.Location;
 import org.spongepowered.api.world.World;
 
 import javax.annotation.Nullable;
-import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
 
@@ -82,9 +82,9 @@ public class GeyserSpongeCommandExecutor extends CommandExecutor implements Comm
     @Override
     public List<String> getSuggestions(CommandSource source, String arguments, @Nullable Location<World> targetPosition) {
         if (arguments.split(" ").length == 1) {
-            return connector.getCommandManager().getCommandNames();
+            return tabComplete(new SpongeCommandSender(source));
         }
-        return new ArrayList<>();
+        return Collections.emptyList();
     }
 
     @Override

bootstrap/sponge/src/main/java/org/geysermc/platform/sponge/command/SpongeCommandSender.java

@@ -51,4 +51,9 @@ public class SpongeCommandSender implements CommandSender {
     public boolean isConsole() {
         return handle instanceof ConsoleSource;
     }
+
+    @Override
+    public boolean hasPermission(String permission) {
+        return handle.hasPermission(permission);
+    }
 }