Add ThreadsX.collect

[tkf]

No description provided.

[codecov]

Codecov Report

Merging #158 into master will increase coverage by 0.18%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #158      +/-   ##
==========================================
+ Coverage   80.00%   80.18%   +0.18%     
==========================================
  Files           9        9              
  Lines         440      444       +4     
==========================================
+ Hits          352      356       +4     
  Misses         88       88              

Impacted Files	Coverage Δ
src/ThreadsX.jl	50.00% <ø> (ø)
src/map.jl	90.00% <100.00%> (+2.50%)	⬆️

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