Check File Name Prefix Exists

Checks if any files with the given prefix exist in the directory Class methods ------------- INPUT_TYPES (dict): Tell the main program input parameters of nodes. Attributes ---------- RETURN_TYPES (`tuple`): The type of each element in the output tuple. RETURN_NAMES (`tuple`): The name of each output in the output tuple. FUNCTION (`str`): The name of the entry-point method. CATEGORY (`str`): The category the node should appear in the UI.