Add timeout option to keyword "attach applicaton by name"

[mytzenka]

Describe the solution you'd like
Sometimes we can't start an application using launch applicaton because we can't start it directly. In that case we need to use attach application by name, but if you do this while the app is still starting, the process may not be available yet.

I solved this by running this keywordusing the RF keyword wait until keyword succeeds, but it would be much neater if I could pass or set a timeout value for attach application by name.