CommandManager.cpp does not depend on EffectManager...

... some code lifted into BatchCommands.cpp to realize this.

It also doesn't depend on PluginManager, but that is not important for breaking
cycles.

src/BatchCommands.h

@@ -15,10 +15,12 @@
 #include <wx/defs.h>
 
 #include "export/Export.h"
+#include "commands/CommandFlag.h"
 
 class wxArrayString;
 class Effect;
 class CommandContext;
+class CommandManager;
 class AudacityProject;
 class wxArrayStringEx;
 
@@ -57,6 +59,9 @@ class MacroCommands final {
  public:
    bool ApplyMacro( const MacroCommandsCatalog &catalog,
       const wxString & filename = {});
+   static bool HandleTextualCommand( CommandManager &commandManager,
+      const CommandID & Str,
+      const CommandContext & context, CommandFlag flags, bool alwaysEnabled);
    bool ApplyCommand( const wxString &friendlyCommand,
       const CommandID & command, const wxString & params,
       CommandContext const * pContext=NULL );