add tests for copy and move operations of the Handle class

[saikishor]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 98.27586% with 1 line in your changes missing coverage. Please review.

Project coverage is 89.44%. Comparing base (d4139b7) to head (715ab29).

Files with missing lines	Patch %	Lines
...re_interface/include/hardware_interface/handle.hpp	95.45%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2011      +/-   ##
==========================================
+ Coverage   89.38%   89.44%   +0.06%     
==========================================
  Files         132      132              
  Lines       14663    14699      +36     
  Branches     1258     1259       +1     
==========================================
+ Hits        13106    13147      +41     
+ Misses       1090     1085       -5     
  Partials      467      467              

Flag	Coverage Δ
unittests	89.44% <98.27%> (+0.06%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
hardware_interface/test/test_handle.cpp	100.00% <100.00%> (ø)
...re_interface/include/hardware_interface/handle.hpp	88.57% <95.45%> (-0.17%)	⬇️

... and 4 files with indirect coverage changes

[Wiktor-99]

LGTM

[saikishor]

@Wiktor-99 thanks for the nice suggestions! :)