Add ability query camera results outside of PhotonPoseEstimator (#786)

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

@@ -212,6 +212,19 @@ public class PhotonPoseEstimator {
         }
 
         PhotonPipelineResult cameraResult = camera.getLatestResult();
+
+        return update(cameraResult);
+    }
+
+    /**
+     * Updates the estimated position of the robot. Returns empty if there are no cameras set or no
+     * targets were found from the cameras.
+     *
+     * @param cameraResult The latest pipeline result from the camera
+     * @return an EstimatedRobotPose with an estimated pose, and information about the camera(s) and
+     *     pipeline results used to create the estimate
+     */
+    public Optional<EstimatedRobotPose> update(PhotonPipelineResult cameraResult) {
         if (!cameraResult.hasTargets()) {
             return Optional.empty();
         }