Impl/aws sdk

This was an important solution :point_up: it helped to resolve all the problems with dependent types in executors (now executors are very simple and don't require anything). So the point is that implicit resolution of this converter or any other thing needed by an action, should happen at the moment when you instantiate this action. It makes sense to me: if I'm creating a particular action to execute, it should be ok, with all the things needed for execution _before_ I will even write `service please ...` (actually you normally create an action write in this call, so there is no difference from the usage perspective)