feat(instance): generate volume migration commands

[scaleway-bot]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 76.05634% with 17 lines in your changes missing coverage. Please review.

Project coverage is 72.43%. Comparing base (5bf53e0) to head (370f77b).
Report is 244 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/namespaces/instance/v1/instance_cli.go	76.05%	15 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4111      +/-   ##
==========================================
- Coverage   75.45%   72.43%   -3.02%     
==========================================
  Files         202      289      +87     
  Lines       44323    53908    +9585     
==========================================
+ Hits        33444    39049    +5605     
- Misses       9653    13258    +3605     
- Partials     1226     1601     +375     

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