[DOP-31721] Implement SQL transformations

[IlyasDevelopment]

Change Summary

Implemented SQL transformations in worker.

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.

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
syncmaster/worker/handlers/file
base.py	73	1	98%	142
local_df.py	71	4	94%	55, 59, 63–64
remote_df.py	31	4	87%	32, 36, 40–41
s3.py	34	2	94%	76–77
TOTAL	5311	614	88%