Add a QA check for version/changelog correctness for new packages

I noticed that a couple of recurrent issues with new packages are:

For non-native packages, packaging version not being -0 or -1, usually due to people uploading to mentors -1, -2, -3 and so on.
Changelog containing stuff other than the Initial release (Closes: #nnnn).

I think we should add a QA test to check against those issues.

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