fix: consistently set executor log options

[agilgur5]

Fixes #12788, Fixes https://github.com/argoproj/argo-workflows/pull/12929#discussion_r1572707894

Motivation

• loglevel, gloglevel, and log format were inconsistently set around the codebase for executor containers
  • meaning that some had partial settings and some had no settings, depending on the command run etc

Modifications

• for all commands, including emissary, agent, resource, and data

  • set loglevel, gloglevel, and log format

• replace getExecutorLogLevel helper with getExecutorLogOpts helper

• add a helper in util/cmd/glog.go to get the gloglevel

Verification

Existing tests pass

[agilgur5]

You mean making this line more specific?

I didn't change the option in this PR, just made it actually used, but could improve that for sure

[agilgur5]

Merged main for new checks per #13027