Add Span conversion to LocalVector.

Author: Ivorforce

core/templates/local_vector.h

@@ -48,13 +48,12 @@ class LocalVector {
 	T *data = nullptr;
 
 public:
-	T *ptr() {
-		return data;
-	}
+	_FORCE_INLINE_ T *ptr() { return data; }
+	_FORCE_INLINE_ const T *ptr() const { return data; }
+	_FORCE_INLINE_ U size() const { return count; }
 
-	const T *ptr() const {
-		return data;
-	}
+	_FORCE_INLINE_ Span<T> span() const { return Span(data, count); }
+	_FORCE_INLINE_ operator Span<T>() const { return span(); }
 
 	// Must take a copy instead of a reference (see GH-31736).
 	_FORCE_INLINE_ void push_back(T p_elem) {
@@ -146,7 +145,6 @@ class LocalVector {
 		}
 	}
 
-	_FORCE_INLINE_ U size() const { return count; }
 	void resize(U p_size) {
 		if (p_size < count) {
 			if constexpr (!std::is_trivially_destructible_v<T> && !force_trivial) {