Asynchronous File module added

[Niraj-Kamdar]

No description provided.

[codecov-commenter]

Codecov Report

Merging #751 into master will decrease coverage by 0.07%.
The diff coverage is 81.81%.

@@            Coverage Diff             @@
##           master     #751      +/-   ##
==========================================
- Coverage   81.55%   81.47%   -0.08%     
==========================================
  Files         126      126              
  Lines        2445     2462      +17     
  Branches      285      287       +2     
==========================================
+ Hits         1994     2006      +12     
- Misses        381      387       +6     
+ Partials       70       69       -1     

Flag	Coverage Δ
#longtests	81.47% <81.81%> (-0.08%)	⬇️

Impacted Files	Coverage Δ
cve_bin_tool/file.py	72.41% <52.94%> (-27.59%)	⬇️
test/test_file.py	100.00% <100.00%> (ø)
cve_bin_tool/async_utils.py	91.66% <0.00%> (+3.12%)	⬆️

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[Niraj-Kamdar]

If you have noticed coverage is decreasing in every async PR by a few percent which is because of the additional synchronous function and platform specific instructions which isn't getting tested. It will increase once again when our async pipeline will be ready and I will remove this synchronous functions.