feat: create edit user group page

[CodyWMitchell]

Description

Created the Edit User Group page

• I can edit an existing user group by performing any or all of the following actions:
• I can rename the user group.
• I can update the description of the user group.
• I am notified if the updated user group name has already been used for my organization.
• I can confirm or cancel the request.
• Upon cancellation, I am redirected to the previous page/task.
• Upon saving, I am presented with a success message and redirected to the User Group list.
• I am presented with an error message if the user group is not saved successfully.

Will be handled in future ticket

• I can add or remove principal users and service accounts from the user group from their respective tabs.

Currently values are diffed and displayed, then logged to the console. Another ticket will handle sending out the appropriate requests.

RHCLOUD-32236

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Screenshots

After:

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Checklist ☑️

• PR only fixes one issue or story
• Change reviewed for extraneous code
• UI best practices adhered to
• Commits squashed and meaningfully named
• All PR checks pass locally (build, lint, test, E2E)

• (Optional) QE: Needs QE attention (OUIA changed, perceived impact to tests, no test coverage)
• (Optional) QE: Has been mentioned
• (Optional) UX: Needs UX attention (end user UX modified, missing designs)
• (Optional) UX: Has been mentioned