Player velocity is not added to thrown grenade velocity

[MuffinTastic]

in the AoS classic and OpenSpades clients, grenade velocity is player orientation + player velocity.

for instance, this line (i think?)

BetterSpades/src/hud.c

Line 893 in 340f366

g.vx = (g.fuse_length==0.0F)?0.0F:players[local_player_id].orientation.x;

should be something like
g.vx = (g.fuse_length==0.0F)?0.0F:(players[local_player_id].orientation.x+players[local_player_id].physics.velocity.x);

[xtreme8000]

I really wanted to merge your PR, but I did not know how to resolve those conflicts. I will give credit after adding this myself. (Code location is correct)
Also I think it's probably needed to add the shooters velocity to the tracers aswell.