Is your feature request related to a problem? Please describe.
It would be very helpful to make the logs more readable and operator friendly to expose simple yaml options in the helm chart. Cert-manager does this like:

## -- Map of extra arguments to pass to container.
extraArgs:
  zap-time-encoding: iso8601
  loglevel: debug

and it's documented on their site

Describe the solution you'd like
helm show values external-secrets/external-secrets should show a default values.yaml file which shows the currently logging settings and commented out reference docs on how to enable json, human readable, and verbosity level settings

Describe alternatives you've considered
n/a

Additional context
n/a