Update materials density

[Drew4484]

Summary

Content "Update material density"

Purpose of change

Values are inaccurate in most cases. Material density apparently only matters for vehicle collisions, but should be as accurate as possible in case it is used in more cases going forward.

Describe the solution

First pass of updating density. Some don't have an obvious answer (like ballistic glass), others aren't real (hyperweave).

Describe alternatives you've considered

Adding more materials with incorrect density as part of other PRs.

Testing

Additional context

First pass, stopped at Human Flesh. Some have been passed over (ballistic glass, hyperweave) when there isn't an obvious answer.

[anothersimulacrum]

Can I suggest we just remove this, and add something if we need it? As far as I have seen, it's a useless and poorly unit-ed property that just makes doing things with materials harder.

[Drew4484]

Can I suggest we just remove this, and add something if we need it? As far as I have seen, it's a useless and poorly unit-ed property that just makes doing things with materials harder.

As in remove from all non-vehicle parts, or remove entirely?

[anothersimulacrum]

Remove it entirely.