Create multiple files using shell expansion syntax

[FichteFoll]

Inserting a file named {home,about}.tsx could create two files at once.
Full syntax:

• choice {a,b}.txt → choice a.txt, choice b.txt
• file {1..3}.txt → file 1.txt, file 2.txt, file 3.txt
• file {a}.txt → file {a}.txt

This behavior should be activated using an argument and can thus be customized when creating a key binding to still allow creating files with the raw input. If we're still doing settings, we could also allow specifying the default behavior there.

via @mauroreisvieira on Discord