fix(cli): prevent uninstall timeout by deleting CRDs before controller

[1012Charan]

Description

This PR fixes the timeout issue that occurs during KubeSlice uninstallation. When users run kubeslice-cli uninstall -c, the process would get stuck and fail with a "timed out waiting for the condition" error.

Why was it happening?

The uninstall process was trying to delete the controller first, but the controller couldn't be deleted because workers were still using it. It's like trying to delete a folder while some programs are still using files inside it.

Solution

The fix changes the uninstall order to be smarter:

1. Delete CRDs first - This tells workers "stop what you're doing"
2. Wait 2 seconds - Give workers time to clean up
3. Delete controller - Now it can be removed safely
4. Added timeout - Don't wait forever if something goes wrong

Changes Made

• Added deleteKubeSliceCRDs() function to delete KubeSlice CRDs
• Modified UninstallKubeSliceController() to delete CRDs before controller
• Added --timeout parameter to helm uninstall command

Fixes #58

How Has This Been Tested?

Test Cases:

• Test case A: Run kubeslice-cli uninstall -c topology.yaml - should complete successfully without timeout
• Test case B: Verify CRDs are deleted before controller uninstallation

Test Instructions:

1. Install KubeSlice: kubeslice-cli install -c topology.yaml
2. Run uninstall: kubeslice-cli uninstall -c topology.yaml
3. Verify it completes successfully without timeout errors

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit test cases.

Does this PR introduce a breaking change?

No, this is a bug fix that makes the uninstall process more reliable. The same command works the same way, just without the timeout issue.

[1012Charan]

@narmidm kindly review this

[Arpit529Srivastava]

@1012Charan can you please add DCO to your commit.
not the maintainer just trying to help :)

[1012Charan]

hey @Arpit529Srivastava, I've included DCO as you mentioned. Appreciate your help!