feat(angular): add standalone tabs (#28093)

Issue number: N/A

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## What is the current behavior?

Tabs cannot be used as a standalone component.

## What is the new behavior?
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this PR. -->

- Added tabs as a standalone component.
- Added a quick test. I included the event checking from the lazy test
in the HTML as a smoke check, but didn't bring over the Cypress tests
for them since I noticed the other standalone tests have been quick,
stripped down affairs. I'm assuming I would just be duplicating effort.
Let me know if I should bring more tests over from the lazy version, or
even get rid of the event logging from the standalone HTML.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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screenshots of how the component looks before and after the change. -->