Add chacha20 crypto

[Igor-Misic]

Description

Add ChaCha20 cryptography algorithm
ChaCha20 definition document : https://datatracker.ietf.org/doc/html/rfc8439

Checklist

• I have read and understood the contribution guidelines.
• I have added any necessary documentation (if appropriate).
• I have added unit tests (if appropriate).
• I have run make cppcheck on my code and fixed any reported issues.
• I have run make astyle on my code and ensured that it adheres to the project's formatting guidelines.
• Test coverage is at 100% for the modified code.

Additional Notes

In this iteration, the primary objective was to achieve MISRA compliance. Depending on the level of interest in this implementation, we can explore the possibility of selectively omitting certain MISRA rules in exchange for improved performance.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.90%. Comparing base (b8a1468) to head (9a4eca6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #72   +/-   ##
=======================================
  Coverage   99.89%   99.90%           
=======================================
  Files          61       62    +1     
  Lines         949     1031   +82     
  Branches      196      201    +5     
=======================================
+ Hits          948     1030   +82     
  Partials        1        1           

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[jciberlin]

Great work! I have added some comments.