[watch] allow ignoring non-existing paths

[Gentle]

Trunk.toml allows to provide paths that should be ignored by trunk watch and trunk serve, but the way this is currently implemented requires the paths to actually exist so you can ignore them. This causes issues when you want to ignore optional files (like editor specific temporary or configuration files)

my proposal would be to allow non-existing paths in ignore

[Gentle]

#173

I made a Pull Request with the minimal change that works for me, if you have anything I should change please let me know :)

[Nouzan]

It will be great if we can have this feature!

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[alexkazik]

If would be great if this happens.