SharedItemComponent (#3513)

* StorableComponent refactor

* ItemComponent refactor

* conflict fixes

* removes redundant null check

* removes redundant item throwing code

* fix conflicts

* ExplosionLaunchedComponent

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/GameObjects/Components/Explosion/ExplosionLaunchedComponent.cs

@@ -0,0 +1,30 @@
+using Content.Server.GameObjects.Components.Items;
+using Content.Shared.GameObjects.EntitySystems;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.GameObjects.Components.Explosion
+{
+    [RegisterComponent]
+    public class ExplosionLaunchedComponent : Component, IExAct
+    {
+        public override string Name => "ExplosionLaunched";
+
+        void IExAct.OnExplosion(ExplosionEventArgs eventArgs)
+        {
+            if (Owner.Deleted)
+                return;
+
+            var sourceLocation = eventArgs.Source;
+            var targetLocation = eventArgs.Target.Transform.Coordinates;
+            var direction = (targetLocation.ToMapPos(Owner.EntityManager) - sourceLocation.ToMapPos(Owner.EntityManager)).Normalized;
+
+            var throwForce = eventArgs.Severity switch
+            {
+                ExplosionSeverity.Heavy => 30,
+                ExplosionSeverity.Light => 20,
+                _ => 0,
+            };
+            Owner.TryThrow(direction * throwForce);
+        }
+    }
+}