runtime/js: impl CopyBytesToGo/CopyBytesToJS

[visualfc]

• fix call args value incref
• impl CopyBytesToGo/CopyBytesToJS
• itoa （remove strconv dep)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.80%. Comparing base (f2c16be) to head (281b3ec).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1182   +/-   ##
=======================================
  Coverage   87.80%   87.80%           
=======================================
  Files          29       29           
  Lines        7272     7272           
=======================================
  Hits         6385     6385           
  Misses        821      821           
  Partials       66       66           

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