Move framework actions into per-action folders (as-is)

[Marius Storhaug (MariusStorhaug)]

Summary

First step of the PSMA consolidation (PSModule/Process-PSModule#384): fold the framework-internal GitHub Actions into one repo, one folder per action, moved as-is.

Each action keeps its own action.yml + src/scripts + tests, so every action stays independently usable as PSModule/PSMA/<Action>@<ref> while we migrate. No logic changed in this PR — it only relocates the actions.

Folders added

• Build-PSModule/
• Test-PSModule/
• Publish-PSModule/
• Get-PSModuleSettings/
• Resolve-PSModuleVersion/ (uses scripts/)
• Install-PSModuleHelpers/
• Document-PSModule/
• Get-PesterCodeCoverage/
• Get-PesterTestResults/

Copied per action: action.yml, the script dir (src/scripts), tests/, README.md. Skipped each source repo's .github/ (its own CI), LICENSE (repo root already has one), and dotfiles. The Template-Action root scaffolding is left untouched for now.

Next steps (separate PRs)

1. Move any inline action.yml logic into the PowerShell scripts (most actions already just call a main script).
2. Consolidate shared functions into a common PSMA module imported by a new root main.ps1 that dispatches on an activity input (e.g. main.ps1 Build, main.ps1 TestLocal), then re-point the Process-PSModule sub-workflows at PSMA.

Tracking: PSModule/Process-PSModule#384