bpo-35081: And pycore_lifecycle.h and pycore_pathconfig.h (GH-10273)

* And pycore_lifecycle.h and pycore_pathconfig.h headers to
  Include/internal/
* Move Py_BUILD_CORE specific code from coreconfig.h and
  pylifecycle.h to pycore_pathconfig.h and pycore_lifecycle.h
* Move _Py_wstrlist_XXX() definitions and _PyPathConfig code
  from pycore_state.h to pycore_pathconfig.h
* Move "Init" and "Fini" function definitions from pylifecycle.c to
  pycore_lifecycle.h.

Programs/python.c

@@ -1,6 +1,7 @@
 /* Minimal main program -- everything is loaded from the library */
 
 #include "Python.h"
+#include "pycore_lifecycle.h"
 
 #ifdef MS_WINDOWS
 int