Add YAPF style + ignore, and format tracked Python files

cmdnat/__init__.py

@@ -32,9 +32,8 @@ def register_native_commands(registry: Dict[str, CmdletFn]) -> None:
     """Import native command modules and register their CMDLET exec functions."""
     base_dir = os.path.dirname(__file__)
     for filename in os.listdir(base_dir):
-        if not (
-            filename.endswith(".py") and not filename.startswith("_") and filename != "__init__.py"
-        ):
+        if not (filename.endswith(".py") and not filename.startswith("_")
+                and filename != "__init__.py"):
             continue
 
         mod_name = filename[:-3]
@@ -46,5 +45,8 @@ def register_native_commands(registry: Dict[str, CmdletFn]) -> None:
         except Exception as exc:
             import sys
 
-            print(f"Error importing native command '{mod_name}': {exc}", file=sys.stderr)
+            print(
+                f"Error importing native command '{mod_name}': {exc}",
+                file=sys.stderr
+            )
             continue