feat: updates Subscription Controller exports (#7037)

…in controller exports

## Explanation

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Updates Subscription Controller exports.

## References

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## Checklist

- [ ] I've updated the test suite for new or updated code as appropriate
- [ ] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [ ] I've communicated my changes to consumers by [updating changelogs
for packages I've
changed](https://github.com/MetaMask/core/tree/main/docs/contributing.md#updating-changelogs),
highlighting breaking changes as necessary
- [ ] I've prepared draft pull requests for clients and consumer
packages to resolve any breaking changes

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Exports `SubscriptionControllerSubmitSponsorshipIntentsAction` and
`SubmitSponsorshipIntentsMethodParams`, and updates the changelog
accordingly.
> 
> - **Subscription Controller exports**:
> - Add `SubscriptionControllerSubmitSponsorshipIntentsAction` to
`src/index.ts`.
>   - Add `SubmitSponsorshipIntentsMethodParams` to `src/index.ts`.
> - **Docs**:
> - Update `CHANGELOG.md` to note the new
`SubscriptionControllerSubmitSponsorshipIntentsAction` export.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
e8e08ff. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: lwin-kyaw

packages/subscription-controller/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - Added new property, `isSponsorshipSupported` to the ControllerState, `pricing.paymentMethods.chains`. ([#7035](https://github.com/MetaMask/core/pull/7035))
+- Added `SubscriptionControllerSubmitSponsorshipIntentsAction` in the controller exports. ([#7037](https://github.com/MetaMask/core/pull/7037))
 
 ### Changed
 

packages/subscription-controller/src/index.ts

@@ -15,6 +15,7 @@ export type {
   SubscriptionControllerMessenger,
   SubscriptionControllerOptions,
   SubscriptionControllerStateChangeEvent,
+  SubscriptionControllerSubmitSponsorshipIntentsAction,
   AllowedActions,
   AllowedEvents,
 } from './SubscriptionController';
@@ -58,6 +59,7 @@ export type {
   UpdatePaymentMethodCardRequest,
   UpdatePaymentMethodCardResponse,
   CachedLastSelectedPaymentMethod,
+  SubmitSponsorshipIntentsMethodParams,
 } from './types';
 export {
   CRYPTO_PAYMENT_METHOD_ERRORS,