Adding separate parse script

import logging

from asn1tools import parse_files, ParseError

from pathlib import Path

from pprint import pprint

if __name__ == '__main__':

    fileList = list(Path(".").rglob("*.asn1")) + list(Path(".").rglob("*.asn"))

    if len(fileList) == 0:

        logging.warning ("No files specified")

        exit(0)

    print ("ASN.1 Parser checks:")

    print ("-----------------------------")    

    logging.info("Parsing files...")

    errorCount = 0

    for f in fileList:

        try:

            parse_files(str(f))

        except ParseError as ex:

            logging.info (f"  {f}: Failed - {ex!r}")

            print (f"  {f}: Failed - {ex!r}")

            errorCount += 1

            continue

        print (f"  {f}: OK")

    print ("-----------------------------")    

    print (f"Parse errors: {errorCount}")

    print ("-----------------------------")    

    exit(errorCount)