Make testing environment for Patterns development

[kell18]

Right now it is really hard to debug rules: you need to mock data all the time in specific storages that Tsp supports, run whole job, look for results in sink.
I suggest improve JSON end-points:

• Make specific source format for generating synthetic data. Simple DSL like: X biggerThan Y for 10 min andThen becomes 0
• Specific format of Sink (like console, file or web UI output)