cmake: Add explicit SVN_ENABLE_SWIG_PERL_TESTS, SVN_ENABLE_SWIG_PYTHON_TESTS,
SVN_ENABLE_SWIG_RUBY_TESTS configuration options to enable corresponding
SWIG bindings tests. Similar to SVN_ENABLE_JAVAHL_TESTS.

* .github/workflows/cmake.yml
  (Windows, static, x64, with tests)
  (Mac OS): Set SVN_ENABLE_SWIG_PERL_TESTS, SVN_ENABLE_SWIG_PYTHON_TESTS,
   SVN_ENABLE_SWIG_RUBY_TESTS to ON.

* CMakeLists.txt
  (): Add SVN_ENABLE_SWIG_PERL_TESTS, SVN_ENABLE_SWIG_PYTHON_TESTS,
   SVN_ENABLE_SWIG_RUBY_TESTS CMake options. Enable SWIG bindings tests
   only if corresponding option is enabled.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1936674 13f79535-47bb-0310-9956-ffa450edef68