Open File options in context menu

[Irame]

If the argument is a file or directory path then a option in the context menu should be available.

• If Macro evaluation is enabled, it must be done first.
• If its a absolut path, its used as is.
• If its a rooted path, its evaluated on the same drive as $(TargetDir).
• If its a relative path, its appended to $(TargetDir).

For files:

File -> Open in VS-Editor
        Open with default app
        Reveal in Explorer

For directories:

Open in Explorer