Add more integration tests to the GDScript test suite

This also fixes a typo in the `bitwise_float_right_operand.gd` test.

modules/gdscript/tests/scripts/parser/features/lambda_named_callable.gd

@@ -0,0 +1,10 @@
+func i_take_lambda(lambda: Callable, param: String):
+	lambda.call(param)
+
+
+func test():
+	var my_lambda := func this_is_lambda(x):
+		print("Hello")
+		print("This is %s" % x)
+
+	i_take_lambda(my_lambda, "a lambda")