Create ifcopenshell_wrapper.pyi

stub file for swig-generated ifcopenshell_wrapper python file

src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.pyi

@@ -0,0 +1,21 @@
+# ifcopenshell_wrapper.pyi
+
+class FileDescription:
+    description: tuple[str, ...]
+    implementation_level: str
+
+class FileName:
+    name: str
+    time_stamp: str
+    author: tuple[str, ...]
+    organization: tuple[str, ...]
+    preprocessor_version: str
+    originating_system: str
+    authorization: str
+
+class IfcSpfHeader:
+    @property
+    def file_description(self) -> FileDescription: ...
+    
+    @property
+    def file_name(self) -> FileName: ...