Create a new titblebar button to show the context menu, and the menu item is for merging some others titlebar button.

See also #1690 #1608 #1582 #1527 #659 #290

And I should merge the MediaInfoViewer / BinaryViewer from my legacy forked.

Some new idea for HexViewer(BinaryViewer):

 Get-Content test0710_intensity.pcd -Encoding Byte -TotalCount 1000 | Format-Hex

Add the Copy full path menu item.