Rotate the player model approprietly based on motion

Based on our conversation, here are the two approaches:

The simplest, acceptable approach is:

Dots always faces the door
Dots turns toward the enemy it's attacking
After combat, stay rotated until the next move, where it faces the door again

The more desirable, more sophisticated approach:

when the player tap on a tile, the movement gets decomposed in one-cell steps
for each step, Dots move to an adjacent cell, and pause for something like 300ms
Dots orients its back towards the previous tile
When attacking, Dots reorients towards the attacker

The second approach, while more complex, will make the game a bit nicer to play and allow for positioning strategies, like flanking or backstabbing damage

cc @christianv78 for viz

Volumetrics-io / solgarden

Rotate the player model approprietly based on motion #25