Fix throwing.

Content.Client/GameObjects/Components/Projectiles/ProjectileComponent.cs

@@ -0,0 +1,23 @@
+using Content.Shared.GameObjects.Components.Projectiles;
+using Robust.Shared.GameObjects;
+
+#nullable enable
+
+namespace Content.Client.GameObjects.Components.Projectiles
+{
+    [RegisterComponent]
+    public class ProjectileComponent : SharedProjectileComponent
+    {
+        protected override EntityUid Shooter => _shooter;
+        private EntityUid _shooter;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (curState is ProjectileComponentState compState)
+            {
+                _shooter = compState.Shooter;
+                IgnoreShooter = compState.IgnoreShooter;
+            }
+        }
+    }
+}

Content.Client/GameObjects/Components/Projectiles/ThrownItemComponent.cs

@@ -0,0 +1,12 @@
+using Content.Shared.GameObjects;
+using Robust.Shared.GameObjects;
+
+namespace Content.Client.GameObjects.Components.Projectiles
+{
+    [RegisterComponent]
+    public class ThrownItemComponent : ProjectileComponent
+    {
+        public override string Name => "ThrownItem";
+        public override uint? NetID => ContentNetIDs.THROWN_ITEM;
+    }
+}