Giulio Foresto

feat(SourceT): add fromConsumableActionStep that creates a StepT from…

3

… an action that consumes some data Closes #1448

Make `fromAction` and `fromActionStep` able to pass a value from an action to the next one

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## Context On `servant-server`, I must serve some data that I query from a store. The persistance interface returns me some [`Stream`](https://hackage.haskell.org/package/streaming-0.2.3.0/docs/Streaming-Prelude.html) of resources, so actual queries to the store...