Made the pyjapc.pyjapc submodule private

Made the pyjapc.pyjapc module private. The pyjapc.PyJapc class is the primary entrypoint, not the module itself.

docs/pyjapc.rst

 PyJapc API
 ==========
 
-Module pyjapc.pyjapc
---------------------
+pyjapc.PyJapc class
+-------------------
 
-.. automodule:: pyjapc.pyjapc
+.. autoclass:: pyjapc.PyJapc
     :members:
     :undoc-members:
-    :show-inheritance:
 
-Module pyjapc.rbac_dialog
+
+pyjapc.rbac_dialog module
 -------------------------
 
 .. automodule:: pyjapc.rbac_dialog
     :members:
     :undoc-members:
-    :show-inheritance: