Fix Staged calculation

Author: shana

src/GitHub.Api/Git/GitStatusEntry.cs

@@ -134,11 +134,14 @@ public static GitFileStatus ParseStatusMarker(char changeFlag)
         public GitFileStatus IndexStatus => indexStatus;
         public GitFileStatus WorkTreeStatus => workTreeStatus;
 
-        public bool Staged => indexStatus != GitFileStatus.None;
+        public bool Staged => indexStatus != GitFileStatus.None && !Unmerged && !Untracked && !Ignored;
 
         public bool Unmerged => (indexStatus == workTreeStatus && (indexStatus == GitFileStatus.Added || indexStatus == GitFileStatus.Deleted)) ||
                                  indexStatus == GitFileStatus.Unmerged || workTreeStatus == GitFileStatus.Unmerged;
 
+        public bool Untracked => workTreeStatus == GitFileStatus.Untracked;
+        public bool Ignored => workTreeStatus == GitFileStatus.Ignored;
+
         public override string ToString()
         {
             return $"Path:'{Path}' Status:'{Status}' FullPath:'{FullPath}' ProjectPath:'{ProjectPath}' OriginalPath:'{OriginalPath}' Staged:'{Staged}' Unmerged:'{Unmerged}' Status:'{IndexStatus}'  Status:'{WorkTreeStatus}' ";