Add new types of atoms

[Zac8668]

• Add particles #35

• Enhance powders #34

• Add flow resistance to liquids #36

• Add lava

• Dirt

• Stone

[Zac8668]

On Astratomic we are looking for some more "realistic" types of atoms, something like the cloner, or something too abstract would not fit that well with the game.

Any suggestions of types of atoms are welcome!

[hallucino]

Is it in the roadmap to add more interactions between atoms ?

[Zac8668]

@hallucino For sure! There is just so much to do at the moment that we didn't add that yet.