[CLI] Add `set_hardware_component_state` verb

[christophfroehlich]

I updated the hardware lifecylce demo as part of the multi robot example https://github.com/ros-controls/ros2_control_demos/pull/417 and realized that there is no cli verb for changing hardware lifecycle.

This PR adds the verb set_hardware_component_state to our CLI.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 48.02%. Comparing base (35bb5f7) to head (5e42962). Report is 7 commits behind head on master.

:exclamation: Current head 5e42962 differs from pull request most recent head 6fa3492. Consider uploading reports for the commit 6fa3492 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1248       +/-   ##
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- Coverage   75.51%   48.02%   -27.49%     
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  Files          41       41               
  Lines        3328     3525      +197     
  Branches     1921     1912        -9     
===========================================
- Hits         2513     1693      -820     
- Misses        421      442       +21     
- Partials      394     1390      +996     

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unittests	48.02% <ø> (-27.49%)	:arrow_down:

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