Skip swig for windows gazebo source install

[knmcguire]

🦟 Bug fix

Related to this issue in gazebo testing: gazebosim/gazebo_test_cases#1701

Summary

If installed with the original instructions:

colcon build --cmake-args -DBUILD_TESTING=OFF --merge-install --packages-up-to gz-sim9 gz-tools2

I get

...\miniconda3\envs\gz-ws\include\ruby-3.3.0\x64-mswin64_140\ruby\config.h(4,1): error C1189: #error:  MSC version unmatch: 1920..1939 is expected. [C:\Users\kimbe\Development\simulation\gazebo\gz-ws\build\gz-math8\src\ruby\rbmath.vcxproj]
  (compiling source file '../../lib/ruby/Vector3RUBY_wrap.cxx'

Among other issues. It seems that Ruby is quite picky with the MSC versions but I couldn't find a version of Ruby to go around this, and I don't think it is feasible to update the MSC version that needs to be updated to satisfy ruby's restrictive requirements. @azeey suggested to build the workspace with:

colcon build --cmake-args -DBUILD_TESTING=OFF -DSKIP_SWIG=ON --merge-install --packages-up-to gz-sim9 gz-tools2

Checklist

• Signed all commits for DCO
• Added tests
• 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.