1. What is the shortcut key to open a new window/instance in Visual Studio Code for MAC?
2. What is the shortcut key to close window/instance in VS Code for MAC?
3. What is the shortcut key to toggle sidebar visibility in VS Code for MAC?
4. What is the shortcut key to show command palette in VS Code for MAC?
5. What is the shortcut key to move line down in VS Code for MAC?
6. What is the shortcut key to copy line up in VS Code for MAC?
7. What do we use this shortcut ⌥ + click for?
8. What do we use this shortcut ⌘D for?
9. What do we use this shortcut ⇧⌘K for?
10. What is the shortcut key to toggle line comment in Visual Studio Code for MAC?
11. What is the shortcut key to toggle block comment in VS Code for MAC?
12. What do we use this shortcut ⌘S for?