No-code processing

[earocorn]

This will be similar to the existing SensorML Stream Process module, but needs no-code workflow for generic processing such as the following:

• Generic threshold process (input1, threshold, boolean output)
• Process with boolean expression parameter
• Generic calculation process (input1, input2, operator, output)

We also need to think about how this would be accessible in other client applications. Would need Admin REST API, some processing REST API, or combination of both.

Processing API

• Expose process providers available on the node, so client knows processing capabilities of a node.
• Validate SensorML processes.
• Accept SensorML processes in a simpler format