Add Priority in RadiusComponent for RVO

[AtheosCode]

No description provided.

[bassmit]

Hi Atheos, thanks for the pull request. This is quite an impactful feature though, it's going to require some consideration to figure out the best implementation. A couple of quick things:

Are you getting good results with this implementation? Simply ignoring neighbours makes me a bit hesitant as both agents are responsible for half the collision avoidance.

Another issue is I wouldn't add the priority to the radius component.

Ideally this feature would not add any overhead if it wasn't used, which would require some more thought on the implementation

[AtheosCode]

It is more appropriate to increase the mass dimension, the higher the mass, the closer to the maximum speed, and the lower the mass, the closer to the minimum speed
Priority is a trick，but userful。