feat: add version control to documentation

[FeynmanZhou]

Resolve #317. Add version control to ORAS documentation. ORAS users will be able to choose a version from the drop-down list.

v1.2.0 is the default version. Next is the upcoming version which is in development.

[shizhMSFT]

LGTM

[TerryHowe]

All the links in the footer link to unversion pages and seem to be broken

[TerryHowe]

I don't see links to the community pages in the preview

[FeynmanZhou]

I don't see links to the community pages in the preview

Details

@TerryHowe I temporarily hide the doc links within footer section in this PR. I may need more time to investigate and will resolve it in the next PR.

[FeynmanZhou]

I don't see links to the community pages in the preview

@TerryHowe
Do you expect that the Community pages should be existed in the current release (v1.2.0) only?

[TerryHowe]

All the links in the footer are missing or broken now

[TerryHowe]

I spent an hour messing with this and haven't improved anything although I suspect something around https://docusaurus.io/docs/versioning#navbar-items would fix the links. I was mostly trying to understand how to have versioned and unversioned chunks of documents, but that isn't working either

[FeynmanZhou]

I spent an hour messing with this and haven't improved anything although I suspect something around https://docusaurus.io/docs/versioning#navbar-items would fix the links. I was mostly trying to understand how to have versioned and unversioned chunks of documents, but that isn't working either

@TerryHowe
Thanks for your investigation.
I also looked into the doc but has not found a solution https://docusaurus.io/docs/versioning#navbar-items.
So I temporarily hide the doc links within footer section. I also moved the Community page from "Next" to the current version "v1.2.0".

I may need more time to investigate the versioned link route and will resolve it in the next PR.

[TerryHowe]

/lgtm