feat: support io metrics

[Yisaer]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 31.11111% with 31 lines in your changes missing coverage. Please review.

Project coverage is 71.28%. Comparing base (1ebc3ae) to head (14460c7).
Report is 30 commits behind head on master.

Files with missing lines	Patch %	Lines
extensions/impl/kafka/sink.go	0.00%	22 Missing ⚠️
extensions/impl/sql/sink.go	38.46%	7 Missing and 1 partial ⚠️
extensions/impl/kafka/source.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3443      +/-   ##
==========================================
- Coverage   71.34%   71.28%   -0.06%     
==========================================
  Files         412      414       +2     
  Lines       47154    47749     +595     
==========================================
+ Hits        33640    34034     +394     
- Misses      10886    11051     +165     
- Partials     2628     2664      +36     

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[ngjaying]

Looks like these are common metrics. No need to add them in the specific io node. So close for now.