Allow adding static names to hostresolver

[jandubois]

The host resolver looks up names on the host, not inside the guest, so will not be able to resolve names from /etc/hosts inside the guest. This doesn't matter for programs running directly inside the guest, as they use the local resolver, and the host resolver is just a nameserver.

It does however affect containers, which only have access to the nameserver, so can't resolve e.g. host.lima.internal.

I suggest to add a configuration option:

hostResolver:
  hosts:
    "host.docker.internal": host
    "example.com": 127.0.0.1

The string host is special and will be translated to the gateway address to the host.

The name host.lima.internal is built-in and will always be defined as a name of the host.

[jandubois]

We should also define the IP address of the hostname itself, i.e. the equivalent of

lima-default 192.168.5.15

systemd-resolved seems to do this automatically, but e.g. Alpine doesn't:

jan@lima-default:/Users/jan$ nslookup lima-default.
Server:		127.0.0.53
Address:	127.0.0.53#53

Name:	lima-default
Address: 192.168.5.15
Name:	lima-default
Address: fec0::5055:55ff:fee9:a1b4
Name:	lima-default
Address: fe80::5055:55ff:fee9:a1b4

lima-alpine:/Users/jan$ nslookup lima-alpine.
Server:		192.168.5.3
Address:	192.168.5.3:53

** server can't find lima-alpine.: NXDOMAIN