Migrate to SPM (CocoaPods are deprecated)

[jpdup]

Bug description

Why:
https://blog.cocoapods.org/CocoaPods-Specs-Repo/

How:
https://docs.flutter.dev/packages-and-plugins/swift-package-manager/for-app-developers

Steps to reproduce

Build and see the warning console output from Flutter/Dart

Expected behavior

No more CocoaPods used for iOS

Screenshots (URLs)

n/a

Device

iPhone

OS

iOS (any)

Plugin Version

1.1.0

Flutter Version

3.44.0

Additional context

n/a

[khushal-chothani]

@jpdup Please check my PR :- #3

[jpdup]

@jpdup Please check my PR :- #3

I reviewed the PR and it looks correct
But note that I'm not the maintainer of this repo, I do not have permission to merge