Few issues found here:

1. Hot reload does not work on-saved
2. Cannot find "Flutter: Hot Reload" and "Flutter: Hot Restart" command in the Command Palette.
   

Flutter doctor:
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, v1.8.2-pre.33, on Mac OS X 10.14.5 18F132, locale en-GB)

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 10.2.1)
[✓] iOS tools - develop for iOS devices
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.4)
[✓] VS Code (version 1.36.1)
[✓] Connected device (3 available)