add point to bevy component ecs

[HexSleeves]

With Bevy becoming increasingly popular, I thought we could add it to the component tree like specs

I chose TableStorage as the default storage type. Sparse-set is also available (https://bevy-cheatbook.github.io/patterns/component-storage.html#table-storage) but this seems like a specific use case. It might fit our use case since Point could be inserted quite frequently