Fix template file extension for CakePHP4

Author: junichi11

src/org/netbeans/modules/php/cake3/modules/CakePHP4ModuleDefault.java

@@ -160,4 +160,10 @@ protected FileObject getDirectory(FileObject baseDirectory, CakePHPModule.Base b
         return baseDirectory.getFileObject(relativePath);
     }
 
+    @Override
+    public String getCtpExt() {
+        // CakePHP4 uses php as the template file extension
+        return "php"; // NOI18N
+    }
+
 }