c++ warnings

[fire]

src/MotionMatcher.hpp:124:18: warning: '_enter_tree' overrides a member function but is not marked 'override' [-Winconsistent-missing-override]
    virtual void _enter_tree()  {
                 ^
godot-cpp/gen/include/godot_cpp/classes/node.hpp:281:15: note: overridden virtual function is here
        virtual void _enter_tree();
                     ^