Reorganize PFM Stub Storage and Add the SDL Show/Hide Modifier.

[Hoikas]

This centralizes the location of all PFM attribute stubs for easier maintenance and adds a modifier exposing xAgeSDLBoolShowHide and xAgeSDLIntShowHide. It should hopefully make life a little easier for creating global SDL controlled visibility type stuff.

[DoobesURU]

So I slapped some show/hide SDL mods on a few objects. The Boolean SDL show/hide mods in Chiso seemed to work just fine.

However, the Integer show/hide mods in the Pub came back with this error:

Error: sequence item 0: expected str instance, int found
Traceback (most recent call last):
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\operators\op_export.py", line 228, in execute
    e.run()
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 125, in run
    self._pre_export_scene_objects()
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 563, in _pre_export_scene_objects
    do_pre_export(bl_obj)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 551, in do_pre_export
    gen_result = pre_result.send(gen_result)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\base.py", line 247, in pre_export
    yield self.convert_logic(bo)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\base.py", line 188, in convert_logic
    name = kwargs.pop("name", self.key_name)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\logic.py", line 257, in key_name
    return f"cPythIntShowHide_{self.sdl_variable}_{'-'.join(self._int_states)}"
TypeError: sequence item 0: expected str instance, int found

location: <unknown location>:-1

location: <unknown location>:-1

[DoobesURU]

New error after commit d19534b:

Error: 'xAgeSDLIntShowHide.py'
Traceback (most recent call last):
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\operators\op_export.py", line 228, in execute
    e.run()
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 125, in run
    self._pre_export_scene_objects()
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 563, in _pre_export_scene_objects
    do_pre_export(bl_obj)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\exporter\convert.py", line 551, in do_pre_export
    gen_result = pre_result.send(gen_result)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\base.py", line 247, in pre_export
    yield self.convert_logic(bo)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\base.py", line 197, in convert_logic
    self.logicwiz(bo, **kwargs)
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\logic.py", line 257, in logicwiz
    pfm_node = self._create_standard_python_file_node(tree, "xAgeSDLIntShowHide.py")
  File "D:\Korman 0.16base\2.79\scripts\addons\korman\properties\modifiers\base.py", line 217, in _create_standard_python_file_node
    return self._create_python_file_node(tree, filename, plasma_api.python_files[filename])
KeyError: 'xAgeSDLIntShowHide.py'

location: <unknown location>:-1

location: <unknown location>:-1