Refactored Variant Operators.

-Using classes to call and a table
-For typed code (GDS or GDNative), can obtain functions to call prevalidated or ptr.

core/string_name.cpp

@@ -377,3 +377,17 @@ StringName StringName::search(const String &p_name) {
 StringName::~StringName() {
 	unref();
 }
+
+bool operator==(const String &p_name, const StringName &p_string_name) {
+	return p_name == p_string_name.operator String();
+}
+bool operator!=(const String &p_name, const StringName &p_string_name) {
+	return p_name != p_string_name.operator String();
+}
+
+bool operator==(const char *p_name, const StringName &p_string_name) {
+	return p_name == p_string_name.operator String();
+}
+bool operator!=(const char *p_name, const StringName &p_string_name) {
+	return p_name != p_string_name.operator String();
+}