VCS: Add a way to filter out files/directories that belong to a VCS

Change-Id: I4dcbe6242cfe327e3b72d3dd550309be45e326a9
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitversioncontrol.h

@@ -42,6 +42,8 @@ public:
     QString displayName() const final;
     Core::Id id() const final;
 
+    bool isVcsFileOrDirectory(const Utils::FileName &fileName) const final;
+
     bool managesDirectory(const QString &directory, QString *topLevel) const final;
     bool managesFile(const QString &workingDirectory, const QString &fileName) const final;