feat(module): modularize io

[ngjaying]

Support source/sink module

[codecov]

Codecov Report

Attention: Patch coverage is 76.31579% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 63.50%. Comparing base (30bf65f) to head (ed237ac).
Report is 3 commits behind head on master.

Files	Patch %	Lines
internal/binder/io/builtin.go	72.00%	2 Missing and 5 partials ⚠️
internal/binder/io/ext_edgex.go	0.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2721      +/-   ##
==========================================
+ Coverage   63.46%   63.50%   +0.05%     
==========================================
  Files         337      339       +2     
  Lines       38899    38945      +46     
==========================================
+ Hits        24684    24732      +48     
+ Misses      12050    12044       -6     
- Partials     2165     2169       +4     

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