Our copy of delta-sharing protocol markdown, api and implementation are synced with revision:
e19f640 we should sync to the latest revision.

This will be split in multiple PRs:

• update openapi spec and written form (94-1 - Update openapi spec and written form #203)
• support of delta-sharing-capabilities header (94-2 - support delta-sharing-capabilities header #201 )
• fail when delta is needed but not supported (94-3 Fail when Delta protocol is needed but not supported #222)
• support delta format (94-4)