Add a global .syncignore for multiple synchronized file shares

[ChinaskiJr]

Tell us about your request At the moment, we have to set a .syncignore at the root of every synchronized file shares we use. A way to have a .syncignore_global at the root of the home directory for example could be a nice feature in DX terms.
For example, these files are always ignored from my synchronized file shares :

**/.DS_Store/
**/.idea/
**/.vscode/
**/.platform/

Centralize them into only one global file (like the core.excludesFile to set in ~/.gitconfig for the same purpose on .gitignore : https://git-scm.com/docs/gitignore#_configuration) would be a nice DX improvment.

Which service(s) is this request for? Docker desktop