Move logging from hslogger to co-log

[michaelpj]

This lines up with the way that logging is being done in haskell-language-server and lsp.

At the moment hie-bios is the only reason HLS has a hslogger dependency, and it means that the logs from hie-bios are inconsistent with those from the rest of the subsystems.

[michaelpj]

This is what the output from HLS looks like after incorporating this change. You can see that the hie-bios logs now get formatted like everything else.

Before:

After:

[michaelpj]

cc @eddiemundo

[fendor]

Thank you for bringing co-log to hie-bios!

[michaelpj]

Fixed the tests. Somehow I just didn't realise they existed :sweat_smile: I generally stopped them from issuing a step every log line, which seemed excessive, and instead just put in a couple of explicit steps.

CI is green.