feat: [WD-15753] Delete OIDC User

[Kxiru]

Done

• Created API(s) to delete OIDC identities.
• Created DeleteIdentitiesBtn
• Added an inline delete identity button.

Fixes [list issues/bugs if needed]

QA

1. Run the LXD-UI:
   • On the demo server via the link posted by @webteam-app below. This is only available for PRs created by collaborators of the repo. Ask @mas-who or @edlerd for access.
   • With a local copy of this branch, build and run as described in the docs.
2. Perform the following QA steps:
   • Navigate to Permissions -> Identities and attempt to delete one or many identities through the inline delete button or the bulk delete button.

Screenshots

[webteam-app]

Demo

Jenkins

demos.haus

[Kxiru]

Requires version 6.1/latest edge to run locally.

[edlerd]

The happy path works well, a bit of refinement is needed, see comments below.

[mas-who]

The styling of the action buttons is not consistent with the Permission Groups page, please reference the styles applied there to align the styling.

[mas-who]

some minor suggestions :)

[edlerd]

QA LGTM, only some very small nitpicks.

[edlerd]

LGTM