[UI] Create a page to get the list of interactions in which a pacticipant is involved

[gaeljw]

Pre issue-raising checklist

I have already (please mark the applicable with an x):

• Upgraded to the latest Pact Broker OR
• Checked the CHANGELOG to see if the issue I am about to raise has been fixed
• Created an executable example that demonstrates the issue using either a:
  • Dockerfile
  • Git repository with a Travis or Appveyor (or similar) build

Software versions

N/A

Expected behaviour

It would be really nice if there was a page in the Pact Broker to display all the interactions in which a pacticipant is involved.

AFAIK, you can only view interactions for a given consumer+provider couple. I'd like to view all the consumers of a provider for instance.

Actual behaviour

N/A

Steps to reproduce

N/A

Relevant log files

N/A

[bethesque]

Yup, fair request.

@mefellows for the PactFlow backlog too.