Create jekyll-gh-pages.yml

[gavindidrichsen]

Summary

As a devx developer I want to publish GH Pages for several repositories. The gh pages documentation is detailed. The following key points contributed to my decision to add this change:

• Currently there a 2 ways to generate GH Pages on a repository. The documentation calls these "sources". One is a manual push; the other uses a special github action deployment workflow.
• After June 2024, only the github action source will be used.
• Best practice around documentation is that (1) a special github "environment" should be created called "github-pages" and (2) a unique branch "gh-pages" should be created alongside the "main". The environment is a set of rules that limits documentation deployments from specific branches and the unique branch means that "code" and site-documentation are kept separate.

Therefore, I created the github-pages environment, the gh-pages branch, and the github action workflow defined in this PR

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 86.80%. Comparing base (25ffa25) to head (c6fc857).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #120 +/- ## ======================================= Coverage 86.80% 86.80% ======================================= Files 35 35 Lines 2092 2092 ======================================= Hits 1816 1816 Misses 276 276 ```

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