Feature: Edit existing model servers from UI

[LogicalGuy77]

Description

This PR introduces the ability to edit existing InferenceService configurations directly through the web UI. Users can now modify the YAML definition of a deployed model endpoint.

Currently, users need to use kubectl edit or reapply YAML files via the command line to modify an InferenceService. This feature provides a more user-friendly, integrated way to manage endpoint configurations within the Models Web App itself.

Related Issue(s)

• Closes Implement editing model servers #16 and Canary Rollout From KF-Serving Web App UI #2

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactoring (internal code changes without affecting functionality)
• Documentation update
• Build or CI/CD changes
• Other (please describe):

How Has This Been Tested?

1. Deployed a sample sklearn InferenceService in the kserve-test namespace.
2. Navigated to the endpoint details page.
3. Clicked the "EDIT" button.
4. Verified the ACE editor loaded with the current InferenceService YAML.
5. Modified a parameter.
6. Clicked "Submit".
7. Verified the success notification appeared.
8. Verified the UI returned to the details view.
9. Tested the "Cancel" button functionality.

Screenshots

[juliusvonkohout]

@Griffin-Sullivan