Migrated Go Actor and Go Wait

Frank Mueller
As described a few days ago, I am migrating individual packages of the Tideland libraries to owb repositories. I have already described my motivation for this. In the meantime, two more packages have been migrated to the main level: Tideland Go Actor and Tideland Go Wait. The package Tideland Go Actor pursues the idea to realize concurrency in Go not only via CSP, but also with the Actor Model. It picks up a bit the concept of the Erlang/OTP module gen_server.