Remove dependency of the legacy client code from pkg/cmd directory part 1

[blackpiglet]

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Does your change fix a particular issue?

Fixes #6190

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[codecov-commenter]

Codecov Report

Merging #6469 (4a08bc7) into main (e54a8af) will decrease coverage by 0.04%.
The diff coverage is 64.28%.

@@            Coverage Diff             @@
##             main    #6469      +/-   ##
==========================================
- Coverage   60.18%   60.15%   -0.04%     
==========================================
  Files         229      229              
  Lines       24215    24226      +11     
==========================================
- Hits        14575    14572       -3     
- Misses       8632     8643      +11     
- Partials     1008     1011       +3     

Impacted Files	Coverage Δ
pkg/cmd/cli/backup/create.go	66.92% <64.28%> (-1.20%)	⬇️

... and 4 files with indirect coverage changes