File autocomplete ignore vcs

[rumpl]

This PR #723 added the possibility to ignore VCS, it would be really neat if the filesystem autocomplete also ignored things that are .gitignore'd

[Deepam02]

@rumpl I can take this one.

[rumpl]

Thanks!

[Deepam02]

@rumpl
just a quick question
I can add the vcs ignore as a small helper inside fsx, following the same pattern as the filesystem tool using go-git, and keep it separate. This is the simpler.

Or if you prefer, I can pull the VCS ignore logic out of FilesystemTool and make a shared piece that both the filesystem tool and autocomplete can use.
If we go with this, where should that shared file live?

[rumpl]

Or if you prefer, I can pull the VCS ignore logic out of FilesystemTool and make a shared piece that both the filesystem tool and autocomplete can use.

I think we should do this, the vsc ignore can go into the fsx package I think