feat(instance): add volume wait command

[Codelax]

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Relates OR Closes #0000

Release note for CHANGELOG:

[codecov-commenter]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (d77d758) 75.86% compared to head (4ded8a4) 75.85%.

Files	Patch %	Lines
internal/namespaces/instance/v1/custom_volume.go	47.36%	9 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3526      +/-   ##
==========================================
- Coverage   75.86%   75.85%   -0.02%     
==========================================
  Files         178      178              
  Lines       40426    40448      +22     
==========================================
+ Hits        30670    30682      +12     
- Misses       8653     8662       +9     
- Partials     1103     1104       +1     

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