[DOP-7529] - create class Kafka.Dialect and its tests

[maxim-lixakov]

Change Summary

• add class KafkaDialect to validate parameters of querying data from source
• add tests for KafkaDialect
• add mixin class SupportWhereNone to use with connections' dialects

Related issue number

Checklist

• Commit message and PR title is comprehensive
• Keep the change as small as possible
• Unit and integration tests for the changes exist
• Tests pass on CI and coverage does not decrease
• Documentation reflects the changes where applicable
• docs/changelog/next_release/<pull request or issue id>.<change type>.rst file added describing change
  (see CONTRIBUTING.rst for details.)
• My PR is ready to review.

[codecov]

Codecov Report

Merging #72 (bae957d) into develop (abfa7b4) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop      #72      +/-   ##
===========================================
+ Coverage    92.61%   92.64%   +0.02%     
===========================================
  Files          134      136       +2     
  Lines         6095     6115      +20     
  Branches      1125     1127       +2     
===========================================
+ Hits          5645     5665      +20     
  Misses         348      348              
  Partials       102      102              

Impacted Files	Coverage Δ
...onnection/db_connection/dialect_mixins/__init__.py	100.00% <100.00%> (ø)
...db_connection/dialect_mixins/support_where_none.py	100.00% <100.00%> (ø)
onetl/connection/db_connection/kafka/connection.py	91.66% <100.00%> (+0.17%)	⬆️
onetl/connection/db_connection/kafka/dialect.py	100.00% <100.00%> (ø)