Add fill method to Array and PoolArrays

Co-authored-by: Matheus Lima Cunha <matheus.limacunha@hotmail.com>

core/vector.h

@@ -64,6 +64,7 @@ private:
 
 public:
 	bool push_back(T p_elem);
+	void fill(T p_elem);
 
 	void remove(int p_index) { _cowdata.remove(p_index); }
 	void erase(const T &p_val) {
@@ -156,4 +157,12 @@ bool Vector<T>::push_back(T p_elem) {
 	return false;
 }
 
+template <class T>
+void Vector<T>::fill(T p_elem) {
+	T *p = ptrw();
+	for (int i = 0; i < size(); i++) {
+		p[i] = p_elem;
+	}
+}
+
 #endif