Add ignored cameras regex to command-line arguemnts (#849)

This adds a regex that ignores cameras if they match it, for if you have another piece of software running that needs a second camera, or if you have a webcam in your laptop that cscore hates.

photon-lib/src/main/java/org/photonvision/estimation/PNPResults.java

@@ -44,8 +44,10 @@ public class PNPResults {
      * to the best solution.
      */
     public final Transform3d alt;
+
     /** If no alternate solution is found, this is bestReprojErr */
     public final double altReprojErr;
+
     /** If no alternate solution is found, this is 0 */
     public final double ambiguity;