fix: deep nesting on permissions causing stack overflow errors

Author: jpenilla

cloud-core/src/main/java/cloud/commandframework/permission/AndPermission.java

@@ -50,7 +50,15 @@ public final class AndPermission implements CommandPermission {
      * @return Constructed permission
      */
     public static @NonNull CommandPermission of(final @NonNull Collection<CommandPermission> permissions) {
-        return new AndPermission(new HashSet<>(permissions));
+        final Set<CommandPermission> objects = new HashSet<>();
+        for (final CommandPermission permission : permissions) {
+            if (permission instanceof AndPermission) {
+                objects.addAll(permission.getPermissions());
+            } else {
+                objects.add(permission);
+            }
+        }
+        return new AndPermission(objects);
     }
 
     @Override

cloud-core/src/main/java/cloud/commandframework/permission/CommandPermission.java

@@ -64,7 +64,7 @@ public interface CommandPermission {
         final Set<CommandPermission> permission = new HashSet<>(2);
         permission.add(this);
         permission.add(other);
-        return new OrPermission(permission);
+        return OrPermission.of(permission);
     }
 
     /**
@@ -79,7 +79,7 @@ public interface CommandPermission {
         final Set<CommandPermission> permission = new HashSet<>(other.length + 1);
         permission.add(this);
         permission.addAll(Arrays.asList(other));
-        return new OrPermission(permission);
+        return OrPermission.of(permission);
     }
 
     /**
@@ -94,7 +94,7 @@ public interface CommandPermission {
         final Set<CommandPermission> permission = new HashSet<>(2);
         permission.add(this);
         permission.add(other);
-        return new AndPermission(permission);
+        return AndPermission.of(permission);
     }
 
     /**
@@ -109,7 +109,7 @@ public interface CommandPermission {
         final Set<CommandPermission> permission = new HashSet<>(other.length + 1);
         permission.add(this);
         permission.addAll(Arrays.asList(other));
-        return new AndPermission(permission);
+        return AndPermission.of(permission);
     }
 
 }

cloud-core/src/main/java/cloud/commandframework/permission/OrPermission.java

@@ -50,7 +50,15 @@ public final class OrPermission implements CommandPermission {
      * @return Constructed permission
      */
     public static @NonNull CommandPermission of(final @NonNull Collection<CommandPermission> permissions) {
-        return new OrPermission(new HashSet<>(permissions));
+        final Set<CommandPermission> objects = new HashSet<>();
+        for (final CommandPermission permission : permissions) {
+            if (permission instanceof OrPermission) {
+                objects.addAll(permission.getPermissions());
+            } else {
+                objects.add(permission);
+            }
+        }
+        return new OrPermission(objects);
     }
 
     @Override