chore: add PEP 484 type annotations to modifierservice.py

[yehorcallmedai-maker]

Continuing the type annotation pass from #377 (logservice.py) and #378 (systemservice.py).

What this changes

Adds PEP 484 type annotations to all 7 static methods in ModifierService. No logic changes.

• blender_object / armature_object / modifier return values typed as Any — bpy-stubs are not available at type-check time; Any is the honest annotation that avoids false-positive attribute errors
• modifier_name, modifier_type, vertex_group → str
• show_in_editmode, show_on_cage, move_to_top → bool
• levels, render_levels → int
• Added from typing import Any import

Pyright result

Baseline (before): 1 error, 0 warnings (bpy import unresolvable outside Blender)
After: 1 error, 0 warnings — no regressions introduced

[joepal1976]

Regarding the "Any" part... If installing the fake-bpy-module per the https://github.com/makehumancommunity/mpfb2/blob/master/requirements-dev.txt file, pyright accepts "bpy.types.Object" as type hint.

Now, I'm new to pyright and haven't really done a lot of work with type hinting either. I'd love to hear your input on this. Is it a bad idea to rely on fake-bpy-module?