Ensure Logs are Flushed on Panics

[pleshakov]

As a user of NGF
I want to ensure that I get the log output that leads up to a NGF panic
So that I can report the issue on NGF's GitHub as an issue and it can be fixed.

Acceptance

• Implement a mechanism to catch panic log output.

Ensure no logs are lost when panicking. More context -- https://github.com/uber-go/zap/blob/master/FAQ.md#why-include-dedicated-panic-and-fatal-log-levels