**Summary**:
* Uses pyinstaller directly to build standalone packages, eliminating dependency
on gravitybee
* Uses new python apis to reference package metadata and resources, improving
support for alternative packaging methods, like in-memory runtimes (pyoxidizer)
or ziparchives
* Adds PEP517 package metadata
* [Alpha] Allows watchmaker to run on Red Hat Enterprise Linux 8, Centos 8 Stream,
Oracle Linux 8, Alma Linux 8, and Rocky Linux 8. Currently on the ash-linux
hardening formula will work; none of the other salt formulas have yet been
updated for EL8 support
* ash-windows
- Fixes warning in `lgpo` module about using `is` instead of `==` to compare
string-literal values