Update brick to reflect 2.0 release

[GroovinChip]

• Update translucency option to reflect macos_window_utils
• Update MainFlutterWindow.swift to out-of-the-box configuration
• Update minimum OS built target to 10.14.6
• Add macos_window_utils configuration options
• Require Flutter 3.10 and Dart 3 minimum versions
• TBD