feat: Added support for kafka OAuth authentication

[SzymonZebrowski]

Adds support for Kafka SASL OAUTHBEARER authentication for kafka source and sink.

[codecov]

Codecov Report

Attention: Patch coverage is 47.72727% with 23 lines in your changes missing coverage. Please review.

Project coverage is 65.65%. Comparing base (10b4978) to head (1a892e9).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/shared/util/sasl_config.go	47.72%	18 Missing and 5 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2257      +/-   ##
==========================================
+ Coverage   65.49%   65.65%   +0.16%     
==========================================
  Files         346      346              
  Lines       42394    42438      +44     
==========================================
+ Hits        27764    27864     +100     
+ Misses      13560    13495      -65     
- Partials     1070     1079       +9     

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