[WIP] Simulation Overhaul (#742)

### What does this do?

- Deprecates previous sim classes
- Has a `CameraProperties` class for describing a camera's basic/calibration info, and performance values for simulation. Calibration values can be loaded from the `config.json` in the settings exported by photonvision.
- `OpenCVHelp` provides convenience functions for using opencv methods with wpilib/photonvision classes, mainly to project 3d points to a camera's 2d image and perform solvePnP with the above camera calibration info.
  - `TargetModel`s describe the 3d shape of a target, both for projecting into the camera's 2d image and use in solvePnP.
- `PhotonCameraSim` uses camera properties to simulate how 3d targets would appear in its view, and has simulated noise, latency, and FPS. For apriltags, the best/alternate camera-to-target transform is also estimated with solvePnP.
  - `VideoSimUtil` has helper functions for drawing apriltags to a simulated raw and processed MJPEG stream for each camera using the projected tag corners.
- `VisionSystemSim` stores `VisionTargetSim`s and `PhotonCameraSim`s, and is periodically updated with the robot's simulated pose. When updating, camera sims are automatically processed and published with their visible targets from their respective poses with proper latency.

### What's still not working?

- Mac Arm builds are broken
- More examples
- Update website/docs

photonlib-java-examples/simposeest/src/main/java/frc/robot/Constants.java

@@ -30,7 +30,7 @@ import edu.wpi.first.math.geometry.Transform3d;
 import edu.wpi.first.math.geometry.Translation3d;
 import edu.wpi.first.math.kinematics.DifferentialDriveKinematics;
 import edu.wpi.first.math.util.Units;
-import org.photonvision.SimVisionTarget;
+import org.photonvision.simulation.SimVisionTarget;
 
 /**
  * Holding class for all physical constants that must be used throughout the codebase. These values

photonlib-java-examples/simposeest/src/main/java/frc/robot/DrivetrainSim.java

@@ -38,7 +38,7 @@ import edu.wpi.first.wpilibj.simulation.AnalogGyroSim;
 import edu.wpi.first.wpilibj.simulation.DifferentialDrivetrainSim;
 import edu.wpi.first.wpilibj.simulation.EncoderSim;
 import edu.wpi.first.wpilibj.simulation.PWMSim;
-import org.photonvision.SimVisionSystem;
+import org.photonvision.simulation.SimVisionSystem;
 
 /**
  * Implementation of a simulation of robot physics, sensors, motor controllers Includes a Simulated