Feature Request: Partial Accept

Currently you can either accept:
- the entire suggested line (with `tab`)
- or the entire multiline code-block (with `alt + tab`)

However, there is currently no way to partially accept a suggestion. In VSCode, you can do this with `cmd + tab`, where it only accepts "one word" of the suggestion. This allows for pressing this command a couple of times up to the point you agree with the suggestion and then simply write from there. For me, and many colleagues this speeds up their Copilot experience in VSCode tremendously - would be nice to have it in Xcode as well.