Plugin path need love

Plugin path exec are matched against a string.

Need to be multiple strings for [issues/*.md, projects2/issues/*.md]

Need to have ** possibility (not in go filematcher so find a lib or make manual think with a walk) for [issues/**/*.md] done in Glob.go

Add ! (not) in Glob.go, to be able to do [issues/*.md, !issues/no_that.md]

Today we can do **/*|!.gitroot/** which is wierd but works!