Unified repo interface extension for block data mover

[Lyndon-Li]

Fix issue #9723, extend Unified Repo Interface to support block uploader

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 60.95%. Comparing base (c5fa50b) to head (455f3ba).
⚠️ Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/repository/udmrepo/kopialib/lib_repo.go	25.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9724      +/-   ##
==========================================
- Coverage   60.97%   60.95%   -0.03%     
==========================================
  Files         384      384              
  Lines       36609    36623      +14     
==========================================
- Hits        22324    22322       -2     
- Misses      12677    12692      +15     
- Partials     1608     1609       +1     

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