Add Swift Package Manager support

[nielsenko]

As of Flutter 3.24 there is preview support for Swift Package Manager. We should explore switching away from cocoa pod.

https://docs.flutter.dev/packages-and-plugins/swift-package-manager/for-plugin-authors#how-to-add-swift-package-manager-support-to-an-existing-flutter-plugin

Depending on when native assets feature is released, this may be outdated before we get to it.

[sync-by-unito[bot]]

➤ PM Bot commented:

Jira ticket: RDART-1084

[dotjon0]

Any updates on this? There is a security issue in CocoaPods https://github.com/CocoaPods/CocoaPods/issues/12801 so we need Swift Package Manager support in Realm ASAP. This is blocking at high prioirty.