feat(divider): add new ion-divider component (#30270)

Issue number: internal
---------

## What is the new behavior?
- Introduces a new component, `ion-divider` which has two props,
`spacing` and `inset`.
- Adds e2e tests to both `spacing` and `inset` props

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

## Other information
- As discussed with the PO, using this new component inside an
`ion-item` is out of scope , for now.

---------

Co-authored-by: Brandy Smith <brandyscarney@users.noreply.github.com>
Co-authored-by: Gonçalo M. <goncalo.martins@outsystems.com>
Co-authored-by: Maria Hutt <thetaPC@users.noreply.github.com>

packages/angular/src/directives/proxies-list.ts

@@ -25,6 +25,7 @@ export const DIRECTIVES = [
   d.IonContent,
   d.IonDatetime,
   d.IonDatetimeButton,
+  d.IonDivider,
   d.IonFab,
   d.IonFabButton,
   d.IonFabList,