Add code for a practice defense bot

We want to use the 2nd robot drivetrain as a defense bot to use in drive
practice, this commit adds the folder for that robot.

Signed-off-by: Maxwell Henderson <mxwhenderson@gmail.com>
Change-Id: I8d379c8793dffe3248f1ecef83fe18040c7e0e77
diff --git a/y2024_defense/joystick_reader.cc b/y2024_defense/joystick_reader.cc
new file mode 100644
index 0000000..8c3115b
--- /dev/null
+++ b/y2024_defense/joystick_reader.cc
@@ -0,0 +1,65 @@
+#include <unistd.h>
+
+#include <cmath>
+#include <cstdio>
+#include <cstring>
+
+#include "aos/actions/actions.h"
+#include "aos/init.h"
+#include "aos/logging/logging.h"
+#include "aos/network/team_number.h"
+#include "aos/util/log_interval.h"
+#include "frc971/autonomous/base_autonomous_actor.h"
+#include "frc971/control_loops/drivetrain/localizer_generated.h"
+#include "frc971/control_loops/profiled_subsystem_generated.h"
+#include "frc971/input/action_joystick_input.h"
+#include "frc971/input/driver_station_data.h"
+#include "frc971/input/drivetrain_input.h"
+#include "frc971/input/joystick_input.h"
+#include "frc971/input/redundant_joystick_data.h"
+#include "frc971/zeroing/wrap.h"
+#include "y2024_defense/constants.h"
+#include "y2024_defense/control_loops/drivetrain/drivetrain_base.h"
+
+using Side = frc971::control_loops::drivetrain::RobotSide;
+
+namespace y2024_defense {
+namespace input {
+namespace joysticks {
+
+class Reader : public ::frc971::input::ActionJoystickInput {
+ public:
+  Reader(::aos::EventLoop *event_loop)
+      : ::frc971::input::ActionJoystickInput(
+            event_loop,
+            ::y2024_defense::control_loops::drivetrain::GetDrivetrainConfig(),
+            ::frc971::input::DrivetrainInputReader::InputType::kPistol,
+            {.use_redundant_joysticks = true}) {}
+
+  void AutoEnded() override { AOS_LOG(INFO, "Auto ended.\n"); }
+
+  bool has_scored_ = false;
+
+  void HandleTeleop(
+      const ::frc971::input::driver_station::Data &data) override {
+    (void)data;
+  }
+};
+
+}  // namespace joysticks
+}  // namespace input
+}  // namespace y2024_defense
+
+int main(int argc, char **argv) {
+  ::aos::InitGoogle(&argc, &argv);
+
+  aos::FlatbufferDetachedBuffer<aos::Configuration> config =
+      aos::configuration::ReadConfig("aos_config.json");
+
+  ::aos::ShmEventLoop event_loop(&config.message());
+  ::y2024_defense::input::joysticks::Reader reader(&event_loop);
+
+  event_loop.Run();
+
+  return 0;
+}