exdx

Related to #396

Move this back to the backlog as it's not required in the immediate term.

This is somewhat outdated specifically in regards to the annotation validation, considering the linked PR where validation was done to ensure the annotation is valid JSON. More so, as we...

We may actually be more interesting in support other clouds first. Some examples include Alibaba, Google Cloud, and Oracle.

https://github.com/ava-labs/subnet-evm/pull/761

I've documented subnet-evm in the above PR. @coffeeavax can you document tokenvm?

Could be an optional flag versus a default behavior

Oh whoops, if this is in the backlog then I can unassign. We can reevaluate when it gets prioritized.