[FEATURE] How to use the new Braintree App with Frontends?

[BrocksiNet]

Description

Repo of the new Braintree App: https://github.com/shopware/braintree-app

ToDo:

• Example with composables how to use Braintree App with Frontends.
• Documentation or Readme explaining the set up to developers.

Use Case

More Payments Integrations for Frontends.

Proposed Solution

No response

Alternatives Considered

No response

Additional Context

No response

[gianfranco-l]

@m-lingens-shopware any suggestion or context regarding the priority of this? should this be in framework? for now, I have added a minimal priority based on the knowledge I have