lerp method
Implementation
UArOrbit lerp(UArOrbit other, double t) => UArOrbit(
yaw: yaw + (other.yaw - yaw) * t,
pitch: pitch + (other.pitch - pitch) * t,
distance: distance + (other.distance - distance) * t,
target: target.lerp(other.target, t),
fov: fov + (other.fov - fov) * t,
);