The role of a slave as a host for Factorio servers is not well reflected
in its name and has caused confusion among users. Rename slave to host
to better reflect its role as a host of Factorio servers.
The role of the master server as the party controlling every part of the
cluster is not well reflected in its name and has caused confusion among
users on several occasions. Rename master to controller to better
reflects its role.
Based on docker and github actions
Builds a docker image for each commit as well as the lua lib mod
Builds the master branch of subspace_storage for use with the tests
Tests are based on latest stable factorio branch