Support VCR to easily create contracts and mocks

[canny]

Be able to use pact as a VCR (record and replay request/response) proxy to replay the responses and create contracts from these responses. The integration with 3rd party would be extremely easier and very accurate. https://github.com/vcr/vcr

https://pact.canny.io/admin/board/feature-requests/p/support-vcr-to-easily-create-contracts-and-mocks

[canny]

This issue has been linked to a Canny post: Support VCR to easily create contracts and mocks 🎉