[examples] Add XRP C++ Examples and Templates (#5743)

wpilibcExamples/src/main/cpp/examples/examples.json

@@ -691,6 +691,23 @@
       "romi"
     ]
   },
+  {
+    "name": "XRP Reference",
+    "description": "An example command-based robot program that can be used with the XRP reference robot design.",
+    "tags": [
+      "XRP",
+      "Command-based",
+      "Differential Drive",
+      "Digital Input",
+      "Joystick"
+    ],
+    "foldername": "XRPReference",
+    "gradlebase": "cppxrp",
+    "commandversion": 2,
+    "extravendordeps": [
+      "xrp"
+    ]
+  },
   {
     "name": "StateSpaceFlywheel",
     "description": "Control a flywheel using a state-space model (based on values from CAD), with a Kalman Filter and LQR.",