* adding a CreateType to ActionParams
* rename calltype to action type
* comments & line lengths
* rebame ActionParams.call_type
* Making call/create type optional
* Moving strict create/call type into trace package instead of storing loosely typed action type
* fix build
* Deriving ActionType from address_scheme in ext.create
* trigger build
* more detailed comments
* Change actions_type to call in vmtests
* skipping serialization for Option::None and using TryFrom instead of maybe_new
* retrigger build
* trigger build
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