Worker wrapper cmd

Runs the worker wrapper as a command line program. This change is pretty simple
is just parses the input parameters and interfaces with baseworker-go. Most of the
logic is handled by the corresponding package.
Oh no, it won't. I was thinking too narrowly about my use case. Do you have a recommendation for the interface? An new argument "--additional-command-line abc" where abc is the additional parameters to be appended after the payload?