Bump version to 0.31.0

[mischreiber]

Platforms Impacted

• iOS
• visionOS
• macOS

Description of changes

Bumped version number to 0.31.0.

All platforms

• [iOS][macOS] Remove iOS Xcode Project #2082
• [iOS][macOS] Rework top-level file management #2090

iOS

• [iOS] Add sourceItem as the anchor option to Drawer for the popover presenting style #2084
• Properly deprecate UITextItemInteraction for iOS 17 #2086
• Handle deprecated API in DatePickerController #2089
• Change max allowed tabs from 5 to 6 in TabBarView #2092
• Cleanup code #2095
• [iOS] Updating Version.plist keys to match other plists #2096
• Fix SPM support for visionOS #2098

Miscellaneous

• Fix links #2091
• Fixing swiftlint for new folder config #2093

Binary change

n/a - version increase

Verification

Verified new version numbers in demo apps

Pull request checklist

This PR has considered:

• Light and Dark appearances
• iOS supported versions (all major versions greater than or equal current target deployment version)
• VoiceOver and Keyboard Accessibility
• Internationalization and Right to Left layouts
• Different resolutions (1x, 2x, 3x)
• Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
• iPad Pointer interaction
• SwiftUI consumption (validation or new demo scenarios needed)
• Objective-C exposure (provide it only if needed)

Microsoft Reviewers: Open in CodeFlow

[mischreiber]

Going to wait for #2098 to be part of this release