Build system technical debt

[reactive-firewall]

This is technical debt ... it is ugly code. either revert way back and use simple open function or refactor to use new build system and use the untested cutting edge. 🤷🏻

Originally posted by @reactive-firewall in #45 (comment)

[reactive-firewall]

ℹ️ Need to use new build system

[reactive-firewall]

ℹ Documentation Links here: https://blog.ganssle.io/articles/2021/10/setup-py-deprecated.html
ℹ see also new docs for build module: https://build.pypa.io/en/stable/

[reactive-firewall]

🙈 Regression in builds for python 3.7 which is EOL already. will remove from mats and demote build to version 1.1.1 to remediate.

[reactive-firewall]

build module seems like the way forward for now and has been implemented.
Need more testing to ensure no regression related to this issue, but otherwise resolved.