fix missile trails (#81)

added replicated `SpawnTrail` that acts as a marker and gets picked up by the client to create the visuals.

crates/shared/src/protocol/mod.rs

@@ -19,7 +19,10 @@ use crate::{
     platforms::ActivePlatform,
     player::{Player, PlayerBodyMesh},
     tick::GameTick,
-    utils::{auto_rotate::AutoRotation, billboards::Billboard, squish_animation::SquishAnimation},
+    utils::{
+        auto_rotate::AutoRotation, billboards::Billboard, squish_animation::SquishAnimation,
+        trail::SpawnTrail,
+    },
 };
 use avian3d::prelude::{
     AngularInertia, AngularVelocity, CenterOfMass, Collider, ColliderDensity, CollisionLayers,
@@ -96,6 +99,7 @@ pub fn plugin(app: &mut App) {
         .replicate_once::<Npc>()
         .replicate::<SquishAnimation>()
         .replicate_once::<Transform>()
+        .replicate_once::<SpawnTrail>()
         .replicate::<UiActiveHeads>()
         .replicate_as::<Visibility, SerVisibility>();