Release 2.1.0

What's Changed

• Add TabContentFlow for iOS 18+ Tab API by @janpollak in #57
• Add xcconfig templates and ConfigKey protocol by @ssestak in #58
• Rename TabCoordinator.Tab associatedtype to TabValue by @janpollak in #66
• Add SwiftLint build phase to SwiftUI App template by @ssestak in #65
• Add state management templates by @ssestak in #64
• Fix Xcode 27 warnings in SwiftUI App template by @jmarek41 in #68
• Fix SwiftLint findings and adopt company SwiftFormat config by @jmarek41 in #69
• Ignore duplicate push and empty pop in NavigationStackCoordinator by @janpollak in #71

Full Changelog: 2.0.1...2.1.0