Add triggers to PathPlannerAuto

[mjansen4857]

Add the ability to create triggers directly tied to a PathPlannerAuto. Each auto should have its own event loop for polling these triggers. A few of these triggers would require some more logic to get the information required. This should also include the ability to make a pathplanner auto from an arbitrary command, allowing use of these triggers for command compositions not made with AutoBuilder.

Trigger options should include:

• PathPlannerAuto is running
• PathPlannerAuto is not running
• PathPlannerAuto finished normally
• One shot at timestamp
• Timestamp range
• Event name (would allow doing EventTriggers on a per-auto basis instead of a global EventTrigger)
• Point towards zone name (would allow doing PointTowardsZoneTriggers on a per-auto basis instead of a global PointTowardsZoneTrigger)
• Current path name
• Within distance of position
• Within field area
• Custom condition (normal trigger that will run on the auto's event loop, preventing it from being polled if the auto is not running)