Bring back original NewZapCoreLoggerBuilder api.

[ptabor]

The funcion signature has been changed in:
eafbc8c .
Instead we should have added new method NewZapLoggerBuilder().

[codecov-commenter]

Codecov Report

Merging #12973 (a5aab17) into main (bca0717) will increase coverage by 17.35%.
The diff coverage is 33.33%.

@@             Coverage Diff             @@
##             main   #12973       +/-   ##
===========================================
+ Coverage   47.81%   65.16%   +17.35%     
===========================================
  Files         357      433       +76     
  Lines       28921    34299     +5378     
===========================================
+ Hits        13829    22352     +8523     
+ Misses      13898    10367     -3531     
- Partials     1194     1580      +386     

Flag	Coverage Δ
all	65.16% <33.33%> (+17.35%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
server/embed/config_logging.go	52.98% <33.33%> (+3.34%)	⬆️
server/auth/simple_token.go	77.14% <0.00%> (-8.58%)	⬇️
etcdctl/ctlv3/command/user_command.go	31.88% <0.00%> (ø)
etcdctl/ctlv2/command/error.go	0.00% <0.00%> (ø)
etcdctl/snapshot/util.go	0.00% <0.00%> (ø)
client/v3/experimental/recipes/double_barrier.go	73.33% <0.00%> (ø)
etcdctl/ctlv3/command/make_mirror_command.go	13.54% <0.00%> (ø)
etcdctl/ctlv3/command/elect_command.go	7.81% <0.00%> (ø)
etcdctl/ctlv3/command/compaction_command.go	25.00% <0.00%> (ø)
client/v3/experimental/recipes/client.go	57.14% <0.00%> (ø)
... and 258 more

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[xiang90]

lgtm