Support for werkzeuge 3.0.0

[attrib]

With the latest release of werkzeuge 3.0.0 snappass doesn't work anymore.

Traceback (most recent call last):
  File "/usr/local/bin/snappass", line 33, in <module>
    sys.exit(load_entry_point('snappass==1.6.0', 'console_scripts', 'snappass')())
  File "/usr/local/bin/snappass", line 25, in importlib_load_entry_point
    return next(matches).load()
  File "/usr/local/lib/python3.8/importlib/metadata.py", line 77, in load
    module = import_module(match.group('module'))
  File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 843, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/local/lib/python3.8/site-packages/snappass-1.6.0-py3.8.egg/snappass/main.py", line 10, in <module>
    from werkzeug.urls import url_quote_plus
ImportError: cannot import name 'url_quote_plus' from 'werkzeug.urls' (/usr/local/lib/python3.8/site-packages/werkzeug-3.0.0-py3.8.egg/werkzeug/urls.py)

This fixes the usage of the removed functions as recommeded from the deprecation message - https://github.com/pallets/werkzeug/blob/2.3.x/src/werkzeug/urls.py#L643

[vin01]

this should help #300

[yurushao]

Thanks for the PR. We've merged #300 for the same purpose.