Support expression restriction for contexts

[kelvintaywl]

CircleCI just released expression-based restrictions on org contexts.
https://circleci.com/docs/contexts/#set-an-expression-restriction

The documented API suggests this can be CRUD-able and thus suitable for Terraform support.

it would be good to support this, perhaps as a new resource, say context_restriction

[AxelRobles]

What about context project restrictions? Is possible to implement them? https://circleci.com/docs/api/v2/index.html#operation/createContextRestriction

[kelvintaywl]

hey @AxelRobles yes sure! i think we can also support project restrictions;
I would like to support both if I work on this :)

[AxelRobles]

@kelvintaywl can I work on the project restrictions? and maybe later I can work on the expression restriction.

[kelvintaywl]

@AxelRobles sorry for the late reply. Were you able to start on this? Were there blockers?
let me know, and I'm happy to help :)