ci: add lint workflow

[JamieMagee]

Huh, I expected that action run to show some warnings. I see warnings locally when running PSScriptAnalyze. Maybe I missed some configuration :thinking:

[jessehouwing]

That's running on a runner for ya... Let's see what's up.

[jessehouwing]

Added pssciptanalyzer and the results are uploaded here:

https://github.com/renovatebot/azure-devops-marketplace/security/code-scanning

[jessehouwing]

I'll fix what it spat out so far. Nothing shocking luckily.