Install start ursim

[fmauch]

This PR installs the start_ursim script to the package's install space. This way, it can be reused in downstream packages such as the ROS drivers.

[codecov]

Codecov Report

Patch coverage: 78.43% and project coverage change: +1.07 🎉

Comparison is base (d5ac71a) 69.54% compared to head (687d276) 70.62%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #155      +/-   ##
==========================================
+ Coverage   69.54%   70.62%   +1.07%     
==========================================
  Files          69       69              
  Lines        2476     2526      +50     
  Branches      314      321       +7     
==========================================
+ Hits         1722     1784      +62     
+ Misses        576      562      -14     
- Partials      178      180       +2     

Impacted Files	Coverage Δ
...lient_library/control/trajectory_point_interface.h	100.00% <ø> (ø)
include/ur_client_library/ur/ur_driver.h	71.42% <ø> (+11.42%)	⬆️
src/ur/ur_driver.cpp	51.00% <50.00%> (+2.03%)	⬆️
src/control/trajectory_point_interface.cpp	77.21% <83.72%> (+5.42%)	⬆️

... and 4 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[fmauch]

This seems to work with UniversalRobots/Universal_Robots_ROS_Driver#640 and UniversalRobots/Universal_Robots_ROS2_Driver#733

[RobertWilbrandt]

Seems like a great step to remove these redundant files!