Added sasl authentication

[niden]

Hello!

Type: new feature
Link to issue: #13394

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• I have updated the relevant CHANGELOG
• I have created a PR for the documentation about this change

Added SASL Auth support for Libmemecached

Thanks

[niden]

@sergeyklay > @niden The new memcached extension doesn't work on Windows because libmemcached doesn't work on Windows. Please do not merge this until I figure out how to fix AppVeyor build.

[codecov]

Codecov Report

Merging #14120 into 4.0.x will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            4.0.x   #14120      +/-   ##
==========================================
+ Coverage   66.31%   66.32%   +<.01%     
==========================================
  Files         475      475              
  Lines      112022   112047      +25     
==========================================
+ Hits        74292    74315      +23     
- Misses      37730    37732       +2

Impacted Files	Coverage Δ
ext/phalcon/storage/adapter/libmemcached.zep.c	90.93% <0%> (+0.07%)	⬆️

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[sergeyklay]

@niden Try again after #14191