fix path with whitespace and fix "spawn" in vscode

[z-juln]

1. fix the problem of error when there are spaces in the path
2. Error 'error error: spawn code enoent' will be thrown in the vscode environment, so 'exec' is used

[z-juln]

急着用，就先发包了，标了来源 https://www.npmjs.com/package/@juln/launch-editor

[btea]

https://github.com/vuejs/devtools-next depends on this package, and currently, there will be an error when opening the file in vscode. This PR seems to solve this problem, can you reproduce it? @sodatea