Link FoundationExtensions statically
Making FoundationExtensions the static default.
Renamed static / dynamic, make sure that packages without any suffix are static. This unifies a inconsistency in a lot of frameworks used in our products. Also, static linking is is an attempt to fix this issue while deploying to TestFlight / AppStore:
ITMS-90334: Invalid Code Signature Identifier. The identifier "FoundationExtensions-5555494443d5626ab868338a93cce6b274e34595"
in your code signature for "FoundationExtensions" must match its Bundle Identifier "FoundationExtensions"
This fixes SwiftUI previews in Swift Packages as well.
FoundationExtensions is the default now, the dynamic product is FoundationExtensionsDynamic.