Fix javadoc warnings (#2266)

Persuant to #1093, I added as many docstrings as I could, at least for
things I knew about. Some of the classes I just suppressed the Javadoc
warnings in because they aren't particularly useful to document. This
gets us down to less than 100 Javadoc warnings in total. Docs for core
classes on the C++ side were also added for parity.

photon-lib/src/main/java/org/photonvision/EstimatedRobotPose.java

@@ -48,6 +48,8 @@ public class EstimatedRobotPose {
      *
      * @param estimatedPose estimated pose
      * @param timestampSeconds timestamp of the estimate
+     * @param targetsUsed list of targets used
+     * @param strategy pose strategy
      */
     public EstimatedRobotPose(
             Pose3d estimatedPose, double timestampSeconds, List<PhotonTrackedTarget> targetsUsed) {