Stable Cadence preview release support

[sisyphusSmiling]

Description

With the Stable Cadence milestone approaching (Cadence 1.0) and preview releases of Flow CLI, emulator, flow-go SDK, etc. enabling devs to compose next version Cadence code, developers will need to be able to test their updated implementations using existing tests.

Suggestion

This testing framework is often used across many Flow projects, including standard and core repos - flow-nft, nft-storefront, flow-core-contracts to name a few. It would be very helpful to run the same tests passing with a current Cadence version against an updated Cadence 1.0 implementation using a flow-js-testing pre-release.

Context

Working on stable cadence updates to the NFTStorefront contracts and will continue to update contracts moving forward.

[NtTestAlert]

Working on it. Planning on posting a PR tomorrow.
(Currently mocking it with jest internally, will copy over changes upstream)

[jribbink]

We will also need to setup a release process/separate branch/CI actions for this functionality. I will create a feature/stable-cadence branch which releases to @onflow/flow-js-testing@stable-cadence.

[jribbink]

@onflow/[email protected] has all of the latest Cadence 1.0 changes