Embed existing story pattern

[aclairefication]

Embed the frontmatter from the stories archetype to reduce the amount of maintenance we need to do.
Source: #4 (review)

[aclairefication]

Potential solution: Use Github Action to keep this up-to-date automatically: https://github.com/marketplace/actions/markdown-embed-code-from-file

[aclairefication]

Experiment with Marketplace Github Action markdown-embed-code
aclairefication@1b29baa
ran into a Docker build failure
https://github.com/aclairefication/oss-storytelling/runs/7051828039?check_suite_focus=true#step:2:595

Reported this issue to the Github Action owner
tokusumi/markdown-embed-code#14

[aclairefication]

Another potential Github Actions solution:
https://github.com/marketplace/actions/markdown-autodocs