Added a fall manager for entities

[HashimTheArab]

No description provided.

[Sandertv]

Thanks for your PR! Please make sure to fix the issues pointed out by the CI. Also, for future reference, please do add a description for your PR so we can get an idea of the reason for your PR and the changes you've made.

[HashimTheArab]

anything else on this?

[JustTalDevelops]

Would also remove the fall distance calculation code in falling block and make it adopt this system.

[HashimTheArab]

Would also remove the fall distance calculation code in falling block and make it adopt this system.

is the latest commit fine?

[Sandertv]

There is a bit of an awkward "cycle" between this fall manager and the movement computer. Maybe it'd be an idea to merge them?

[HashimTheArab]

There is a bit of an awkward "cycle" between this fall manager and the movement computer. Maybe it'd be an idea to merge them?

Could you elaborate more on that