feat(projection): add route to get projection from service

[jmkerloch]

closes #63

Documentation

• update api.yaml with new route /services/{service}/projections/{projection}
  • for now only returning projection id in response. Waiting for PR for projection params get from projectionManager to add projection param to response

Code

• add support for error catch for IPC service:
  • add _uuid to error before send to catch it in serviceProcess
  • add _errorFlag to error so serviceProcess can define if an error was returned
  • throw error with errorManager
• define new class projectionRequest / projectionResponse
• add route inside the router:
  • update controller to check for request param for projection and create projection response
• add new function computeRequest() in administrator to pass request to serviceManager
• add computeProjectionRequest in service to check wanted projection

[lgrd]

I think you forgot the changelog ;)