Debugger: Add 'command[s]' to breakpoints, polish BP dialogs.

Add commands (CDB, gdb with '\n' delimiter for multiple),
rearrange dialogs, make ignore count a spin box.

src/plugins/debugger/debuggerstreamops.cpp

@@ -187,6 +187,7 @@ QDataStream &operator<<(QDataStream &stream, const BreakpointParameters &s)
     stream << s.useFullPath;
     stream << s.tracepoint;
     stream << s.module;
+    stream << s.command;
     return stream;
 }
 
@@ -205,6 +206,7 @@ QDataStream &operator>>(QDataStream &stream, BreakpointParameters &s)
     stream >> b; s.useFullPath = b;
     stream >> b; s.tracepoint = b;
     stream >> str ; s.module = str;
+    stream >> str ; s.command = str;
     return stream;
 }