docs: Enable version switcher for the site.

[kirkrodrigues]

Description

The docs theme we're using (pydata-sphinx-theme) supports a version-switcher. To enable the switcher, we need the valid/published versions for a project to be stored in a statically-hosted file. y-scope/yscope-docs#10 adds the versions file for this project.

This PR enables the version switcher.

Validation performed

See the validation steps in y-scope/yscope-docs#10

[junhaoliao]

Tested with task docs:serve (listens at localhost) and CORS disabled in the browser (because the json file is hosted at domain docs.yscope.com).

We don't seem to have released any docs for v0.1.0 though. Is that a placeholder value? I assume the clp-versions.json file will be auto-generated by some script in https://github.com/y-scope/yscope-docs , right?

{
    "message": "Route GET:/clp/v0.1.0/ not found",
    "error": "Not Found",
    "statusCode": 404
}

[kirkrodrigues]

Tested with task docs:serve (listens at localhost) and CORS disabled in the browser (because the json file is hosted at domain docs.yscope.com).

Right, y-scope/yscope-docs#10 adds CORS headers for localhost.

We don't seem to have released any docs for v0.1.0 though. Is that a placeholder value? I assume the clp-versions.json file will be auto-generated by some script in https://github.com/y-scope/yscope-docs , right?

Whoops, was just using that for testing. y-scope/yscope-docs#10 adds the real clp-versions.json file to the yscope-docs site.