Add bundle ID configurations for Expo app extensions

[jerielng]

Pull Request/Issue Resolution

Description of Change:

Adds integration instructions for using Expo iOS app extensions (rich push and push stories) with Expo Application Services.

Is this change associated with a Braze feature/product release?

• Yes (Insert Feature Release Date Here)
• No

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[internetisaiah]

Hey @jerielng , is this one ready for a tech writer review now? Or does it need to be checked by the wrappers team first?

[jerielng]

Hey @jerielng , is this one ready for a tech writer review now? Or does it need to be checked by the wrappers team first?

Thanks for checking in @internetisaiah! I think ideally we'll probably need one more set of eyes from the SDKs team and then it should be good for a tech writer review.

[vanessaland]

LGTM!

Just a small note about the link for #declaring-bundle-identifiers-for-app-extensions

[jerielng]

@internetisaiah Should be ready now!

[josh-mccrowell-braze]

Thanks for this!