[Foundation] Add initializers for NSRange<-->Range (#9709)
[Foundation] Add initializers for NSRange<-->Range (#9709)

* Add initializers to NSRange/Range

* Create Ranges unchecked

apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation,apple/swift-corelibs-foundation