Allow to generate more informative profile file name

[k4rl85]

The aim of this pull request is to generate a more informative profile file name. This would allow us to identify the endpoint that generates a profile file without the need to open it.

To avoid breaking any existent use case I set this behavior behind the setting SILKY_PYTHON_PROFILER_EXTENDED_FILE_NAME that by default is disabled.

If you think we can change the generated filename without worry we can simply apply this change always without the need to introduce the new settings.

[codecov[bot]]

Codecov Report

Merging #638 (0dd5a0b) into master (415529c) will increase coverage by 0.08%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #638      +/-   ##
==========================================
+ Coverage   86.42%   86.51%   +0.08%     
==========================================
  Files          52       52              
  Lines        2078     2091      +13     
==========================================
+ Hits         1796     1809      +13     
  Misses        282      282              

Impacted Files	Coverage Δ
silk/config.py	90.47% <ø> (ø)
silk/collector.py	90.60% <100.00%> (+0.89%)	:arrow_up:

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[albertyw]

@k4rl85 can you try rebasing this pull request to get the tests to pass?

[k4rl85]

@albertyw rebased the pr