[hal,wpilib] Add Touchpad support (#8401)

wpilibc/src/main/python/semiwrap/DriverStation.yml

@@ -57,6 +57,8 @@ classes:
       GetStickPOVsAvailable:
       GetStickButtonsMaximumIndex:
       GetStickButtonsAvailable:
+      GetStickTouchpadFinger:
+      GetStickTouchpadFingerAvailable:
     inline_code: |
       .def("getControlState",
         [](DriverStation *self) -> std::tuple<bool, bool, bool> {
@@ -70,3 +72,8 @@ classes:
                 ".. versionadded:: 2019.2.1\n"
                 "\n"
                 ".. note:: This function only exists in RobotPy\n"))
+  wpi::DriverStation::TouchpadFinger:
+    attributes:
+      down:
+      x:
+      y: