feat(card): Add shape feature to card and style into Ionic theme (#29292)

Issue number: resolves #

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## What is the new behavior?
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- Adds the new shapes to ionic theme card

## Does this introduce a breaking change?

- [ ] Yes
- [X] No

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Co-authored-by: Brandy Carney <brandy@ionic.io>

packages/vue/src/proxies.ts

@@ -184,6 +184,7 @@ export const IonCard = /*@__PURE__*/ defineContainer<JSX.IonCard>('ion-card', de
   'rel',
   'routerDirection',
   'routerAnimation',
+  'shape',
   'target'
 ]);