docs: quickstart config

[vinckr]

Added the qu ickstart config to the doc, short explanation where to find the config and how its loaded into docker.
also a few comments in the yaml itself.

It did not fit quite into the quickstart, so I just added it to the bottom.

Let me know what should be changed or further improved, if needed.

Related issue

Proposed changes

Checklist

• I have read the contributing guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further comments

[vinckr]

Regarding the import of files from GH, do you mean the CodeTabs?
I couldnt find the module in Hydra, but it seems a bit overkill for this case.
Let me know if I should implement it still or if you dont meant CodeTabs at all.

[aeneasr]

Use CodeFromRemote: https://github.com/ory/kratos/blob/master/docs/src/theme/CodeFromRemote.js

All docs are the same thing, if it exists in kratos, it exists here. CodeFromRemote is even used here: https://github.com/ory/hydra/blob/b6f49cd007ee700c2c08c19c875ad734e0822dbf/docs/docs/guides/consent.mdx

[vinckr]

Ok, much nicer with CodeFromRemote.
I added the same changes to 1.9. versioned docs.

Will add something how to use CodeFromRemote to documentation docs....

[aeneasr]

Nice! Have you tested if this is doing what it should locally? :)

[vinckr]

Yes, works locally!