Add storage class support for notebook PVCs

[Gkrumbach07]

https://issues.redhat.com/browse/RHOAIENG-13395

Description

This PR adds support for setting the default storage class for the jupyter tile.
Key changes:

• Added storageClassName field to NotebookData type in both frontend and backend.
• fix test mocks that where creating a new type

How Has This Been Tested?

1. enable storage class feature flag
2. set storage class in dashboard config
3. spawn a notebook in jupyter tile
4. check that notebook created is using the storage class in the dashboard config
5. remove the storage class from the dashboard config
6. spawn it again and check that it uses the default set in the storage class admin page
7. turn off the feature flag
8. spawn it again, check that it uses the default openshift storage class

Test Impact

updated test mocks and added test to make sure default storage class was passed to the backend

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

If you have UI changes:

• Included any necessary screenshots or gifs if it was a UI change.
• Included tags to the UX team if it was a UI/UX change.

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[DaoDaoNoCode]

Tested, works well on the KFNBC
/lgtm

[Gkrumbach07]

had to fix test @DaoDaoNoCode

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.97%. Comparing base (a0d40fd) to head (413093a).
Report is 9 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3255   +/-   ##
=======================================
  Coverage   84.96%   84.97%           
=======================================
  Files        1302     1302           
  Lines       29101    29103    +2     
  Branches     7828     7829    +1     
=======================================
+ Hits        24727    24730    +3     
+ Misses       4374     4373    -1     

Files with missing lines	Coverage Δ
.../notebookController/screens/server/SpawnerPage.tsx	65.00% <100.00%> (+0.44%)	⬆️
frontend/src/types.ts	100.00% <ø> (ø)

... and 6 files with indirect coverage changes

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[Gkrumbach07]

/retest

[DaoDaoNoCode]

/retest

[DaoDaoNoCode]

@Gkrumbach07 Can you rebase your PR with main? That should fix the test.

[DaoDaoNoCode]

/lgtm

[Gkrumbach07]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: DaoDaoNoCode, Gkrumbach07

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