feat: add pre-commit-hooks+config to use with pre-commit.com

[juju4]

And self-apply in github workflows.

PR Summary

This allows easy integration with pre-commit that can be use to validate/lint code before commit (and also after/server side as per github workflow example).

• .pre-commit-config.yaml is the pre-commit configuration that use a remote or local repo
• .pre-commit-hooks.yaml is required for remote linter/validation repo
• github precommit workflow to test server side. note that this use the PSGallery latest released version to validate current code.

Tested on Macos and Linux. Note that current workflow fail is related to warnings as seen on https://github.com/juju4/PSScriptAnalyzer/actions/runs/3867323454/jobs/6592019858#step:5:3554 can change severity to errors if prefer.

Further improvement discussion in https://github.com/pre-commit/pre-commit/issues/2645

PR Checklist

• [x] PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• [x] Summarized changes
• [x] Change is not breaking
• [x] Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• [x] Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• [x] This PR is ready to merge and is not Work in Progress.
  • If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready.

[juju4]

It's up to you if want CI with warning(continue-on-error) or not and if violation fixes should go into this PR too. if small or exclusions, certainly. if bigger, probably better separate.

Only warnings here but exit code is equivalent to error. https://github.com/juju4/PSScriptAnalyzer/actions/runs/5984855087/job/16236411056#step:5:3575