Add AutomationCommands class

- AutomationCommands replaces GetAllMenuCommands, and can provide
information about menus, buttons and toolbars to a script.
- BatchCommands can now return textual results to a script.
- There's a new GUID for mod-script-pipe and it is included in the .sln.

scripts/piped-work/get-gui-structure.py

@@ -27,8 +27,12 @@ def doCommand( command ) :
     print( "Rcvd: " + response )
     return response
 
-def getStructure() :
-    doCommand( 'GetAllMenuCommands:' )
+def do( command ) :
+    doCommand( command )
 
+def getStructure() :
+    do( 'GetBoxes' )
+    #doCommand( 'Screenshot: CaptureMode=menus' )
+    do( 'GetMenusPlus' )
 
 getStructure()