Fixes mypy errors with explanation

Author: NewtonCrosby

commands2/swervecontrollercommand.py

@@ -263,7 +263,9 @@ def __init__(
         else:
             self._desiredRotation = self._trajectory.states()[-1].pose.rotation
         self.addRequirements(
-            requirements,
+            # Ignoring type due to mypy stating the addRequirements was expecting a Subsystem but got an iterable of a subsystem.
+            # The iterable of the subsystem was to be able to force optional kwargs for the users when overloading the constructor.
+            requirements,  # type: ignore
         )
         self._timer = Timer()