Post revival announcement issue and enable GitHub Discussions

[HeyItsGilbert]

What

• Enable GitHub Discussions on the repo
• Open a pinned Discussion titled "PSDepend is back — here's how to help"
• The discussion should: announce new PowerShellOrg stewardship, link to the project board "Start Here" view, list currently open good-first-issues, explain how to claim work

Why

297 stars means there's a latent audience who cared about this module. A direct ask converts watchers into contributors.

[bchap1n]

@HeyItsGilbert very excited to see this revival. I still use PSDepend (and PSDepend2) and most of it's dependency types.

I have some things stuck on pwsh 7.4 due to the .NET deprecation of BinaryFormatter https://bsky.app/profile/brrrock.bsky.social/post/3mh7jxe4rr22z

[HeyItsGilbert]

@bchap1n The good news is I actually already fixed that as part of getting the tests to run. As soon as we get a new version released you should have a fix for that.