chore: started adding some partial typing of bpy modules

typings/bpy/__init__.pyi

@@ -0,0 +1,11 @@
+from typing import Tuple
+
+from .types import Context
+
+class _App:
+    version: Tuple[int, int, int]
+    version_file: Tuple[int, int, int]
+    version_string: str
+
+app: _App
+context: Context

typings/bpy/path.pyi

@@ -0,0 +1,4 @@
+from pathlib import Path
+from typing import Union
+
+def basename(path: Union[str, Path]) -> str: ...

typings/bpy/types.pyi

@@ -0,0 +1,7 @@
+from sbstudio.plugin.model import DroneShowAddonProperties
+
+class Scene:
+    skybrush: DroneShowAddonProperties
+
+class Context:
+    scene: Scene