[DOP-13016] - add namespace_history table and its api methods

[maxim-lixakov]

Change Summary

• Add Namespace History model to track namespaces' changes.
• Remove is_deleted field from Namespace table. Now data about deleted namespaces is stored in Namespace History table in column action.
• Add v1/namespace-history/ api method to receive paginated namespace history. Add endpoint request to method in backend sync client.
• Delete is_deleted field in User model.
• Update following tests and documentation.

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

Attention: Patch coverage is 94.23077% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 89.42%. Comparing base (92d8c88) to head (d2d11e2).

Files	Patch %	Lines
...db/migrations/versions/2024-02-27_5c7a5c5a193b_.py	77.77%	4 Missing ⚠️
...db/migrations/versions/2024-02-27_2452f82ae06c_.py	91.66%	1 Missing ⚠️
horizon/backend/services/uow.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #24      +/-   ##
===========================================
+ Coverage    89.29%   89.42%   +0.12%     
===========================================
  Files          104      109       +5     
  Lines         1981     2061      +80     
  Branches       181      179       -2     
===========================================
+ Hits          1769     1843      +74     
- Misses         167      174       +7     
+ Partials        45       44       -1     

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