Open deep links externally

[kiftio]

What changes are you making?

Open deep links externally, similar to ios here - https://github.com/Shopify/checkout-sheet-kit-swift/pull/227

• When links are clicked, we'll call onCheckoutLinkClicked()
• The DefaultCheckoutEventProcessor will try to open the link
• The client app should specified queries in its manifest to determine which links/schemes should open.

How to test

Tested with a couple of links

<a href="geo:40.712776,-74.005974?q=Statue+of+Liberty">
    Statue of Liberty
</a>

<a href="sms:+1234567890?body=Hello%20there!">
    Send SMS
</a>

https://github.com/user-attachments/assets/41375d89-3d20-4c18-aa30-b922e5e266de

Before you merge

[!IMPORTANT]

• [x] I've added tests to support my implementation
• [x] I have read and agree with the Contribution Guidelines.
• [x] I have read and agree with the Code of Conduct.
• [x] I've updated the README.

---

Checklist for releasing a new version

- [ ] I have bumped the version number in the [`build.gradle` file](https://github.com/Shopify/checkout-kit-android/blob/main/lib/build.gradle#L17) - [ ] I have added a [Changelog](https://github.com/shopify/checkout-sheet-kit-android/blob/main/CHANGELOG.md) entry. - [ ] I have updated the versions in the [README.md](https://github.com/shopify/checkout-sheet-kit-android/blob/main/README.md) for both Gradle and Maven.

[!TIP] See the Contributing documentation for instructions on how to publish a new version of the library.