refactor: Consolidate all py interop into single lib

It was just too hard trying to make it work with separate libs. The
main issue was getting the python md and execution modules to
recognize PySecurityList and other types defined in the core module.

cmake/InitPythonModule.cmake

@@ -23,7 +23,7 @@ function(init_python_module)
     PUBLIC
       pybind11::embed
       spark
-      python_core
+      ${_name}
   )
   target_include_directories(
     ${module_proj}