enhance: improve log encoding performance on proxy nodes

[tedxu]

See #36122

This PR is designed to enhance log performance through two improvements:

1. Optimize JSON encoding by switching JSON serializer to json-iterator.
2. Adding support of lazy initialization WithLazy.

[tedxu]

Benchmark results using default JSON library:

goos: darwin
goarch: arm64
pkg: github.com/milvus-io/milvus/pkg/log
BenchmarkZapReflect-8          92625             11556 ns/op            2718 B/op         13 allocs/op

Results of using json-iterator and WithLazy

goos: darwin
goarch: arm64
pkg: github.com/milvus-io/milvus/pkg/log
BenchmarkZapReflect-8    	  135888	      8713 ns/op	    3226 B/op	      15 allocs/op
BenchmarkZapWithLazy-8   	 1278234	       909.8 ns/op	     496 B/op	       9 allocs/op

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 5 lines in your changes missing coverage. Please review.

Project coverage is 84.87%. Comparing base (7b21032) to head (333e2ef).
Report is 58 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/log/lazy_with.go	82.60%	4 Missing ⚠️
internal/proxy/task_search.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #36123      +/-   ##
==========================================
+ Coverage   81.59%   84.87%   +3.27%     
==========================================
  Files        1266      990     -276     
  Lines      150648   126343   -24305     
==========================================
- Hits       122924   107229   -15695     
+ Misses      22853    14202    -8651     
- Partials     4871     4912      +41     

Files with missing lines	Coverage Δ
internal/datanode/compaction/merge_sort.go	72.83% <ø> (ø)
internal/datanode/compaction/segment_writer.go	79.74% <ø> (-0.72%)	⬇️
internal/proxy/impl.go	85.87% <100.00%> (-0.03%)	⬇️
pkg/log/global.go	100.00% <100.00%> (ø)
pkg/log/mlogger.go	100.00% <100.00%> (ø)
pkg/log/zap_text_encoder.go	85.41% <100.00%> (ø)
internal/proxy/task_search.go	77.41% <0.00%> (+0.46%)	⬆️
pkg/log/lazy_with.go	82.60% <82.60%> (ø)

... and 359 files with indirect coverage changes

[tedxu]

I'm directing all With invocations to WithLazy since there is no cost for the later one. See benchmark results:

BenchmarkWithLazyLog-8             10000            154245 ns/op            2606 B/op         19 allocs/op
BenchmarkWithLog-8                     10000            144891 ns/op            5332 B/op         25 allocs/op

[congqixia]

/lgtm

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: congqixia, tedxu

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