App: 7-way walk/run blend

[avaer]

It will be necessary to interpolate walk/run smoothly due to frame timing differences. We don't want to get into a mid-frame case where the run was triggered when we should have been walking. Smoothing the frame difference will look way better, and no longer look like it's glitched.

[avaer]

Run speed is currently an if statement in avatars.js:

app/avatars/avatars.js

Line 2178 in 8550776

const runSpeed = 0.75;

[avaer]

This is the code that would need to change:

app/avatars/avatars.js

Line 1847 in fff5eb5

const _get5wayBlend = (horizontalAnimationAngles, horizontalAnimationAnglesMirror, idleAnimation, mirrorFactor, angleFactor, speedFactor, k, lerpFn, target) => {

[skaljac]

Issue solved with
#1947