Add abort to stat on remoteFile

[cmdcolin]

This is pretty inconsequential but seemed like it should exist

Adds abort signal to stat()

[codecov]

Codecov Report

Merging #91 (a628b9d) into master (c37d379) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #91   +/-   ##
=======================================
  Coverage   81.11%   81.11%           
=======================================
  Files           4        4           
  Lines         180      180           
  Branches       57       57           
=======================================
  Hits          146      146           
  Misses         34       34           

Impacted Files	Coverage Δ
src/remoteFile.ts	80.43% <100.00%> (ø)

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