feat: implement GET_VOLUME

[guilhem]

Report more information in volumeCondition for GET and LIST.

General:

• Have you removed all sensitive information, including but not limited to access keys and passwords?
• Have you checked to ensure there aren't other open or closed Pull Requests for the same bug/feature/question?

Pull Request Guidelines:

1. Does your submission pass tests?
2. Have you added tests?
3. Are you addressing a single feature in this PR?
4. Are your commits atomic, addressing one change per commit?
5. Are you following the conventions of the language?
6. Have you saved your large formatting changes for a different PR, so we can focus on your work?
7. Have you explained your rationale for why this feature is needed?
8. Have you linked your PR to an open issue

[codecov]

Codecov Report

Attention: Patch coverage is 95.77465% with 3 lines in your changes missing coverage. Please review.

Project coverage is 75.12%. Comparing base (17b7d1b) to head (ff7c61d).

Files with missing lines	Patch %	Lines
internal/driver/controllerserver.go	95.71%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #328      +/-   ##
==========================================
+ Coverage   74.79%   75.12%   +0.33%     
==========================================
  Files          22       22              
  Lines        2396     2440      +44     
==========================================
+ Hits         1792     1833      +41     
- Misses        499      501       +2     
- Partials      105      106       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.