Allow specifying additional forbidden characters in file names

[Makotonoha]

A friend of me and I do encounter this problem too.
I run Obsidian on Linux and Android as well but sync my vault using Syncthing.

I think this solution could be a good one to help people :

[BUG] Files containing double quotes (“) or question mark (?) do not sync to Android

Simplest solution is the previous restriction on using invalid characters in names. Since many disliked that, a toggle choice might be best. I habitually avoid characters invalid in any OS or file system I might conceivably use, but I suspect for those not used to doing that it would be simplest to remove the option.