add `IgnoredCollisions` component

[exoexo-dev]

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Objective

Allow to set ignored collisions per entity.

Solution

Added an IgnoredCollisions component which is checked in the broad phase to filter out ignored collisions before any detection checks.

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Changelog

Added

Added an IgnoredCollisions component which can be added to entities with a Collider to configure a set of entities with which there will be no collision detection with the owning entity.

[exoexo-dev]

~~Looks like something is still missing here - when the entities with ignored collisions are overlapping on spawn they still "explode"~~

Nvm, it was something else (I was using a joint at a different local anchor from the starting position)