[DOP-8837] - add Samba file_connection class

[maxim-lixakov]

Change Summary

• add Samba file connection class
• add unit and integration tests
• add samba container, .env.* files, fixtures

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 #150 (51edbc1) into develop (982d96c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #150   +/-   ##
========================================
  Coverage    94.32%   94.32%           
========================================
  Files          208      208           
  Lines         7775     7775           
  Branches      1465     1465           
========================================
  Hits          7334     7334           
  Misses         321      321           
  Partials       120      120           

Files Changed	Coverage Δ
conftest.py	100.00% <ø> (ø)
onetl/connection/__init__.py	90.00% <ø> (ø)