feat(checkbox): add helperText and errorText properties (#30140)

Issue number: resolves #29810

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## What is the current behavior?
Checkbox does not support helper and error text.

## What is the new behavior?
Adds support for helper and error text, similar to input and textarea.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

## Other information

- [Bottom Content:
Preview](https://ionic-framework-git-rou-11141-ionic1.vercel.app/src/components/checkbox/test/bottom-content)
- [Item:
Preview](https://ionic-framework-git-rou-11141-ionic1.vercel.app/src/components/checkbox/test/item)

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Co-authored-by: Brandy Smith <6577830+brandyscarney@users.noreply.github.com>

packages/angular/src/directives/proxies.ts

@@ -507,14 +507,14 @@ export declare interface IonCardTitle extends Components.IonCardTitle {}
 
 
 @ProxyCmp({
-  inputs: ['alignment', 'checked', 'color', 'disabled', 'indeterminate', 'justify', 'labelPlacement', 'mode', 'name', 'required', 'value']
+  inputs: ['alignment', 'checked', 'color', 'disabled', 'errorText', 'helperText', 'indeterminate', 'justify', 'labelPlacement', 'mode', 'name', 'required', 'value']
 })
 @Component({
   selector: 'ion-checkbox',
   changeDetection: ChangeDetectionStrategy.OnPush,
   template: '<ng-content></ng-content>',
   // eslint-disable-next-line @angular-eslint/no-inputs-metadata-property
-  inputs: ['alignment', 'checked', 'color', 'disabled', 'indeterminate', 'justify', 'labelPlacement', 'mode', 'name', 'required', 'value'],
+  inputs: ['alignment', 'checked', 'color', 'disabled', 'errorText', 'helperText', 'indeterminate', 'justify', 'labelPlacement', 'mode', 'name', 'required', 'value'],
 })
 export class IonCheckbox {
   protected el: HTMLIonCheckboxElement;