1DS C++ SDK v3.4.276

Changes:

Common C++ Core

• Privacy Guard module for Office Applications
• Update submodule to latest (AI support, ECS fixes, Privacy Guard)
• Preliminary support for buidling with vcpkg install

Apple Platforms (Mac OS X, iOS, iPadOS)

• #662 Reduce console logging
• #656 Project more C++ core APIs to Objective-C for MS Teams scenario (feature parity with legacy Aria SDK)

Xamarin Support

• #623 support for Xamarin on Mobile platforms