Gun stuff (#132)

* Guns can now be fully automatic.

Take that BYOND.

* Improve delay handling

* Bullet spread

* Fix firing guns on pickup

Content.Shared/GameObjects/Components/Weapons/Ranged/SharedRangedWeaponComponent.cs

@@ -0,0 +1,46 @@
+using System;
+using SS14.Shared.GameObjects;
+using SS14.Shared.Map;
+using SS14.Shared.Serialization;
+
+namespace Content.Shared.GameObjects.Components.Weapons.Ranged
+{
+    public class SharedRangedWeaponComponent : Component
+    {
+        private float _fireRate;
+        private bool _automatic;
+        public override string Name => "RangedWeapon";
+        public override uint? NetID => ContentNetIDs.RANGED_WEAPON;
+
+        /// <summary>
+        ///     If true, this weapon is fully automatic, holding down left mouse button will keep firing it.
+        /// </summary>
+        public bool Automatic => _automatic;
+
+        /// <summary>
+        ///     If the weapon is automatic, controls how many shots can be fired per second.
+        /// </summary>
+        public float FireRate => _fireRate;
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(ref _fireRate, "firerate", 4);
+            serializer.DataField(ref _automatic, "automatic", false);
+        }
+
+        [Serializable, NetSerializable]
+        protected class FireMessage : ComponentMessage
+        {
+            public readonly GridLocalCoordinates Target;
+            public readonly int Tick;
+
+            public FireMessage(GridLocalCoordinates target, int tick)
+            {
+                Target = target;
+                Tick = tick;
+            }
+        }
+    }
+}