Add: support SOCKS proxy for new outgoing connections (#7)
In the way we currently deploy this in production, it runs on
AWS ECS which does not support IPv6 for containers. As we query
game servers from the container, a new outgoing connection has
to be created which supports both IPv4 and IPv6. By using a SOCKS
proxy deployed within the AWS VPC, we can now query game servers
from within the container without AWS ECS supporting IPv6.
Of course as soon as AWS supports IPv6 for AWS ECS this can be
dropped.
