tkldev-detective not handling beta versions properly

[OnGle]

Got this error on an early 19.0 beta version of tkldev:

Traceback (most recent call last):
  File "/usr/bin/tkldev-changelog-extractor", line 124, in <module>
    from_v = tuple(map(int, from_v))
ValueError: invalid literal for int() with base 10: '0beta1'

Which comes from the version string:

$ cat /etc/turnkey_version
turnkey-tkldev-19.0beta1-trixie-amd64

Evidently tkldev-changelog-extractor does not properly handle beta versions, possibly rc versions either.

Fix should be just handling this parsing properly. And when we do fail to parse the version, providing a proper error message.