vscode: rename vsce and vsced aliases (#7190)

Changed aliases from
```
alias vsce='code --extensions-dir'
alias vsced='code --disable-extensions'
```
to
```
alias vsced='code --extensions-dir'
alias vscde='code --disable-extensions'
```

`vsce` is the command line to publish extensions:
https://code.visualstudio.com/docs/extensions/publish-extension