chore: improve setuptools find_packages (#1985)

shared/setup.py

@@ -1,7 +1,7 @@
 from os import chdir
 from pathlib import Path
 
-from setuptools import setup
+from setuptools import find_packages, setup
 
 # Change directory since setuptools uses relative paths
 here = Path(__file__).parent.resolve()
@@ -14,7 +14,7 @@ setup(
     url="http://github.com/libretime/libretime",
     author="LibreTime Contributors",
     license="AGPLv3",
-    packages=["libretime_shared"],
+    packages=find_packages(exclude=["*tests*", "*fixtures*"]),
     package_data={"": ["py.typed"]},
     install_requires=[
         "click~=8.0.4",