feat: add database snapshot functionality to Helm chart

[carolinaecalderon]

Ticket

CM-448

Description

See notes: https://hpe-aiatscale.atlassian.net/wiki/spaces/ENGINEERIN/pages/1716191279/Guide+Backporting+fixes+to+past+release+branches
TLDR; add Helm values such that you can easily snapshot/backup OR restore a database's persistent volume.

Test Plan

Manual testing or N/A

Checklist

• Changes have been manually QA'd
• New features have been approved by the corresponding PM
• User-facing API changes have the "User-facing API Change" label
• Release notes have been added as a separate file under docs/release-notes/
  See Release Note for details.
• Licenses have been included for new code which was copied and/or modified from any external code

[netlify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.18%. Comparing base (867eb31) to head (05b4c40).
Report is 23 commits behind head on main.

Additional details and impacted files

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  Coverage   59.18%   59.18%           
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  Files         751      751           
  Lines      104462   104462           
  Branches     3598     3599    +1     
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  Hits        61824    61824           
  Misses      42506    42506           
  Partials      132      132           

Flag	Coverage Δ
backend	43.80% <ø> (ø)
harness	72.75% <ø> (ø)
web	54.33% <ø> (ø)

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