FFM-3702 Adding customer logger for evaluation

[stephenmcconkey]

What
Evaluator logs where not respecting the custom logger
Also changed some info logs to debug to reduce clutter

FFM-3702

Why
This is because the custom logger wasn't being passed in, and therefore the default logger was always being used

Testing
Manually tested
Unit Tests - because I added this to the evaluator struct, I had to make a nooplogger

[swarmia]

✅  Linked to Bug FFM-3702 · Go FF SDK not Respecting Custom Logger

[enver-bisevac]

LGTM, what about other packages like cache, repository still using global log? Maybe it should go in another ticket?

[conormurray95]

LGTM! Like Enver said there might be a few stragglers that use the global log on startup but this removes all the noisy ones the customer was complaining about for now