fix: recursive fs.rmdir is deprecated

[stevapple]

  (node:721) [DEP0147] DeprecationWarning: In future versions of Node.js, fs.rmdir(path, { recursive: true }) will be removed. Use fs.rm(path, { recursive: true }) instead
  (Use `node --trace-deprecation ...` to show where the warning was created)

[soumyamahunt]

@stevapple unit tests are failing, could be due to the API usage change and might require updating some mocks. Please make the changes applicable.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (b6ac81d) 91.41% compared to head (0787f3c) 91.41%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #70   +/-   ##
=======================================
  Coverage   91.41%   91.41%           
=======================================
  Files          30       30           
  Lines         897      897           
  Branches      122      122           
=======================================
  Hits          820      820           
  Misses         76       76           
  Partials        1        1           

Files	Coverage Δ
src/swiftorg.ts	100.00% <100.00%> (ø)

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[soumyamahunt]

LGTM