[jsk_robot_startup] add check_use_sim_time app

[knorth55]

this PR adds app for checking and overriding /use_sim_time parameter on real robot.
we run this app every 10 minutes on PR1040.

@shmpwk

[knorth55]

@708yamaguchi maybe this is useful for fetch, too.

[shmpwk]

Interesting! Does thie picture show up somewhere?
I cannot get one even when I execute rosparam set /use_sim_time true in PR2 and he says he will overwrite /use_sim_time with false.

[knorth55]

what do you mean? the picture?

[knorth55]

PR2 run this app every 10 minutes, so tou need to wait for it

[shmpwk]

I mean check_use_sim_time.png won't show up in 10 minutes at all.
I don't know how it works.

[knorth55]

?
the png is just an icon for rwt_app_chooser

[shmpwk]

Thank you for teaching me rwt_app_chooser, I didn't now that.

[k-okada]

Nice. note that the icon is copied from https://www.irasutoya.com/2018/07/blog-post_935.html. I believe newness of software or paper is not important, but icon and picture must be unique and original.

c.f. https://www.youtube.com/watch?v=W3w0ZtGw5fQ&t=1845s