Add a microflow function to find an enumeration value by key.

I've had too many times a situation where I find myself with a string value and have to find a corresponding enumeration value for it. Mostly in data transport situations between various systems. 

So I was wondering: if we can have 'getCaption' and 'getKey' for enumeration values, would it not be helpful to also have at least a 'findByKey' for enumeration values (I can understand 'findByCaption' would be challenging in multi-lingual apps)