Feat: Integrate snap background events (#29641)

## **Description**

Write a short description of the changes included in this pull request,
also include relevant motivation and context. Have in mind the following
questions:
1. What is the reason for the change? New background events feature.
2. What is the improvement/solution? Added code to integrate the new
feature.

## **Manual testing steps**

1. Go to this page...
2.
3.

## **Screenshots/Recordings**


### **Before**


### **After**


## **Pre-merge author checklist**

- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask
Extension Coding
Standards](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
- [ ] I’ve included tests if applicable
- [ ] I’ve documented my code using [JSDoc](https://jsdoc.app/) format
if applicable
- [ ] I’ve applied the right labels on the PR (see [labeling
guidelines](https://github.com/MetaMask/metamask-extension/blob/main/.github/guidelines/LABELING_GUIDELINES.md)).
Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
app, test code being changed).
- [ ] I confirm that this PR addresses all acceptance criteria described
in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

Author: hmalik88

app/scripts/metamask-controller.js

@@ -6357,11 +6357,26 @@ export default class MetamaskController extends EventEmitter {
             currency: fiatCurrency,
           };
         },
-        ///: BEGIN:ONLY_INCLUDE_IF(keyring-snaps)
         hasPermission: this.permissionController.hasPermission.bind(
           this.permissionController,
           origin,
         ),
+        scheduleBackgroundEvent: (event) =>
+          this.controllerMessenger.call(
+            'CronjobController:scheduleBackgroundEvent',
+            { ...event, snapId: origin },
+          ),
+        cancelBackgroundEvent: this.controllerMessenger.call.bind(
+          this.controllerMessenger,
+          'CronjobController:cancelBackgroundEvent',
+          origin,
+        ),
+        getBackgroundEvents: this.controllerMessenger.call.bind(
+          this.controllerMessenger,
+          'CronjobController:getBackgroundEvents',
+          origin,
+        ),
+        ///: BEGIN:ONLY_INCLUDE_IF(keyring-snaps)
         handleSnapRpcRequest: (args) =>
           this.handleSnapRequest({ ...args, origin }),
         getAllowedKeyringMethods: keyringSnapPermissionsBuilder(