add build badge

Author: JayToTheAy

README.md

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 # QSPyLib
+![Python Package Build Action Status](https://github.com/JayToTheAy/QSPy/actions/workflows/python-package.yml/badge.svg)
+
 QSPyLib is a bundle of API wrappers for various amateur radio-related websites, including QRZ, LOTW, eQSL, and ClubLog.
 
 It is currently in development and should be considered unstable version-to-version while the version number is still 0.x.x.