[sameerasw]

This pull request adds a new Share Extension target, AirSyncShareExtension, to the Xcode project. The changes include all necessary project configuration, entitlements, and Info.plist setup to support the new extension, allowing the main app to handle share actions from the system share sheet.

Project Structure and Target Configuration:

• Added a new app extension target AirSyncShareExtension to the Xcode project, including all required build phases (sources, resources, frameworks) and product reference. [1] [2] [3]
• Integrated the new extension into the main app's dependency and embedding workflow, ensuring it is built and embedded with the main app. [1] [2] [3] [4]
• Added the extension's references to the appropriate groups and synchronized file system groups in the project structure. [1] [2]

Build Settings and Entitlements:

• Created dedicated build configurations (Debug, Release, Self Compiled) for the new target, with appropriate settings for code signing, sandboxing, deployment target, and Swift version. [1] [2] [3]
• Added an entitlements file AirSyncShareExtension.entitlements to enable app sandboxing, group access, and user-selected file read-only permissions.

Extension Metadata:

• Added an Info.plist for the share extension, defining its activation rules, supported content types, and principal class, and registering it as a share services extension.