ref: Use Swift integrations

[github-actions]

Note

The pull request "ref: Use Swift integrations" was created by @noahsmartin but did not reference an issue. Therefore this issue was created for better visibility in external tools like Linear.

Adds a new protocol for integrations that takes dependencies as an input. For the easiest migration conformers of the protocol can satisfy the Dependencies associated type with just typealias Dependencies = SentryDependencyContainer. This PR shows how it can be used to make the dependencies just define the minimum necessary dependencies so it can be easily mocked in tests.

#skip-changelog

[linear]

COCOA-1004