test: add unit testing for awviz_common::RosTopicProperty

[ktro2828]

Description

Add unit testing for awviz_common::RosTopicProperty.

How was this PR tested?

$ colcon build --packages-select awviz_common
$ colcon test --packages-select awviz_common
$ ./build/awviz_common/test_property                                                                                    
Running main() from /opt/ros/humble/src/gtest_vendor/src/gtest_main.cc                                                                                                                        
[==========] Running 3 tests from 1 test suite.                                                                                                                                               
[----------] Global test environment set-up.                                                                                                                                                  
[----------] 3 tests from PropertyTest                                                                                                                                                        
[ RUN      ] PropertyTest.EntityTopic                                                                                                                                                         
[       OK ] PropertyTest.EntityTopic (0 ms)                                                                                                                                                  
[ RUN      ] PropertyTest.EntityWithRootAndTopic                                                                                                                                              
[       OK ] PropertyTest.EntityWithRootAndTopic (0 ms)                                                                                                                                       
[ RUN      ] PropertyTest.EntityWithoutTopic                                                   
[       OK ] PropertyTest.EntityWithoutTopic (0 ms)                                                                                                                                           
[----------] 3 tests from PropertyTest (0 ms total)                                                                                                                                           

[----------] Global test environment tear-down                                                 
[==========] 3 tests from 1 test suite ran. (0 ms total)                                                                                                                                      
[  PASSED  ] 3 tests.

Notes for reviewers

None.

Effects on system behavior

None.