feat: add CollisionContact.bias(collider)

mattjennings commented 4 months ago

===:clipboard: PR Checklist :clipboard:===

[x] :pushpin: issue exists in github for these changes
[x] :microscope: existing tests still pass
[x] :see_no_evil: code conforms to the style guide
[x] :triangular_ruler: new tests written and passing / old tests updated with new scenario(s)
[x] :page_facing_up: changelog entry added (or not needed)

==================

Changes:

CollisionContact can be biased toward a collider by using contact.bias(collider). This adjusts the contact so that the given collider is colliderA, and is helpful if you are doing mtv adjustments during precollision.

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eonarheim commented 4 months ago

I've introduced some test flakiness in main, so I'm pretty sure re-running will succeed