Migrate to Github Pages and Regenerate historical docs

[Eric-Arellano]

Per Qiskit/ecosystem#611, we accidentally deleted all ecosystem subsites when sunsetting qiskit.org.

Rustworkx is live, but the historical API docs are not yet for 0.8 - 0.13.

If any of these fail to build, we should modify this to start later and redeploy the docs for the current version, so that the bad release doesn't show up in the left sidebar:

rustworkx/docs/source/conf.py

Line 136 in 4838d39

start_version = (0, 8, 0)

[IvanIsCoding]

To complete this move we will need to:

• Build 0.12
• Build 0.13
• Build 0.14 (latest)
• Figuring out a script to deploy to the gh-pages branch
• Use to https://www.rustworkx.org (which is currently https://qiskit.github.io/rustworkx/)

[Eric-Arellano]

Hey @IvanIsCoding, how did you deploy to https://qiskit.github.io/rustworkx/ with both the un-versioned docs and also 0.13 docs at https://qiskit.github.io/rustworkx/stable/0.13? I don't see the GH Pages code for it.

Specifically, I'm wondering if you had to upload the two subsites in one distinct run? Or you could do them separately, like first deploy unversioned, then later add /stable/0.13? I imagine adding /stable/0.13 on its own would overwrite the existing site.

[IvanIsCoding]

Hey @IvanIsCoding, how did you deploy to https://qiskit.github.io/rustworkx/ with both the un-versioned docs and also 0.13 docs at https://qiskit.github.io/rustworkx/stable/0.13? I don't see the GH Pages code for it.

Specifically, I'm wondering if you had to upload the two subsites in one distinct run? Or you could do them separately, like first deploy unversioned, then later add /stable/0.13? I imagine adding /stable/0.13 on its own would overwrite the existing site.

I manually created the folder under the gh-pages branch. Essentially, the workflow to deploy the latest version needs to always keep the stable/ folder. And the workflow to deploy a stable version shouldn't touch the latest code and should just create a new folder

[IvanIsCoding]

Concluded with #1037 and #1052