//This also allows you to set up a keybinding for Add all missing imports:
{
"key": "ctrl+shift+i",
"command": "editor.action.sourceAction",
"args": {
"kind": "source.addMissingImports",
"apply": "first"
}
}
// Or even enable Add all missing imports on save:
"editor.codeActionsOnSave": [
"source.addMissingImports"
]