Hide buttons, disable keyboard shortcuts for unsupported functions

[thw0rted]

I noticed that a lot of the functions of full VSCode are disabled, but the buttons / menus / keyboard shortcuts to open them are still visible. If it's not too difficult, it might make sense to hide or remove:

• "Run" (debugger"
• Extensions
• Source Control (unless you can actually connect this to real Github somehow?)
• Terminal
• Debug Console
• Problems (probably? I think you can't have Problems without a language server or extensions)

and anything else I'm not thinking of that can't actually be implemented.