Change SimCameraProperties to enable chaining of setters

[ancientstraits]

With this change, the setters of SimCameraProperties return that SimCameraProperties object, enabling chaining. This means that instead of doing:

SimCameraProperties camProps = new SimCameraProperties();
camProps.setCalibration(640, 480, Rotation2d.fromDegrees(100));
camProps.setCalibError(0.25, 0.08);
camProps.setFPS(45);
camProps.setAvgLatencyMs(25);
camProps.setLatencyStdDevMs(5);

We can do:

SimCameraProperties camProps = new SimCameraProperties()
    .setCalibration(640, 480, Rotation2d.fromDegrees(100))
    .setCalibError(0.25, 0.08).setFPS(45)
    .setAvgLatencyMs(25).setLatencyStdDevMs(5);

And this does not disrupt the code for people who are doing it the first way, so doing it both ways is easy. The changes to the code are very simple, as they only make the setters return this;, and change their return type from void to SimCameraProperties.