Make rendering sensors' HasConnections function virtual

[iche033]

🎉 New feature

Summary

Addresses the todo item about making the HasConnection() virtual, specifically,

• Adds a base virtual bool HasConnection() const function to RenderingSensor
• Updates all derived sensors to override the base RenderingSensor class
• Adds HasConnections() to the WideAngleCamera class

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #234 (d1bcce0) into main (075123d) will decrease coverage by 0.10%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #234      +/-   ##
==========================================
- Coverage   68.68%   68.58%   -0.11%     
==========================================
  Files          34       34              
  Lines        3423     3428       +5     
==========================================
  Hits         2351     2351              
- Misses       1072     1077       +5     

Impacted Files	Coverage Δ
include/gz/sensors/ForceTorqueSensor.hh	100.00% <ø> (ø)
include/gz/sensors/NavSatSensor.hh	100.00% <ø> (ø)
src/Sensor.cc	91.25% <0.00%> (-1.01%)	⬇️
src/WideAngleCameraSensor.cc	0.00% <0.00%> (ø)

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[ahcorde]

ups, some tests are not passing

[iche033]

ups, some tests are not passing

ok homebrew build is now green. d1bcce0

the Jammy rendering test failures have been happening for some time and I think they are not related to the changes here.

Addressed