Set lr300 entity to use sprint pose and updated rightArm_NoRProp to use hand

Experimenting with a HeldEntitySprintModifier new animation sub system Plays a selected animation on the right arm once the player goes above a set speed, allowing more left arm movement to show Fades out the hands layer on the root player model as this clip fades in so we get the upper body movement Setup on the LR right now, using the torch idle pose so it looks busted but it gets the idea across Should only need a simple loop or single frame pose with the r_prop at the right