[upstream_utils] Add AprilTag library

.github/workflows/upstream-utils.yml

@@ -30,6 +30,10 @@ jobs:
         run: |
           git config --global user.email "[email protected]"
           git config --global user.name "Your Name"
+      - name: Run update_apriltag.py
+        run: |
+          cd upstream_utils
+          ./update_apriltag.py
       - name: Run update_eigen.py
         run: |
           cd upstream_utils

.styleguide

@@ -20,6 +20,7 @@ generatedFileExclude {
   simulation/gz_msgs/src/include/simulation/gz_msgs/msgs\.h$
   fieldImages/src/main/native/resources/
   apriltag/src/test/resources/
+  apriltag/src/main/native/thirdparty/
   wpilibc/src/generated/
 }