feat(visitor): implement default-args

[kwonoj]

No description provided.

[codecov]

Codecov Report

Merging #121 (f2979d4) into main (b0ad318) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##             main     #121   +/-   ##
=======================================
  Coverage   69.15%   69.15%           
=======================================
  Files          36       36           
  Lines        3245     3245           
=======================================
  Hits         2244     2244           
  Misses       1001     1001           

Impacted Files	Coverage Δ
...istanbul-oxi/src/macros/instrumentation_visitor.rs	0.00% <0.00%> (ø)
...ugin-istanbul-oxi/src/visitors/coverage_visitor.rs	0.00% <ø> (ø)

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