Cleanup uploaded files

[tarampampam]

Description

Added

• Listener CleanupUploadedFilesListener for removing temporary files, which was created during uploading

Fixes #84

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I wrote unit tests for my code (if tests is required for my changes)
• [x] I have made changes in CHANGELOG.md file

[codecov[bot]]

Codecov Report

Merging #87 (11aace0) into master (c7ddf23) will increase coverage by 0.22%. The diff coverage is 100.00%.

:exclamation: Current head 11aace0 differs from pull request most recent head fb0c6eb. Consider uploading reports for the commit fb0c6eb to get more accurate results

@@             Coverage Diff              @@
##             master      #87      +/-   ##
============================================
+ Coverage     78.09%   78.32%   +0.22%     
- Complexity      337      343       +6     
============================================
  Files            64       65       +1     
  Lines           849      858       +9     
============================================
+ Hits            663      672       +9     
  Misses          186      186              

Impacted Files	Coverage Δ
src/Listeners/CleanupUploadedFilesListener.php	100.00% <100.00%> (ø)

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