Add queue listener

[keiranjprice101]

closes #3

Adds pytest Adds queue listener Adds run detector main class Adds very minor test cases. These test cases are minor as the complete functionality does not exist, and awaiting to find out more about e2e and integration testing strategies with ActiveMQ

Things to be done:

• Open issues for making application configurable, graceful shutdown, adding integration and e2e tests where possible, define strategy for connection problems.