Made a fancier lasergun (#174)

Laserguns now have an internal capacitor that can be recharged by using it with a power cell

Makes the final fix for #138

Content.Server/EntryPoint.cs

@@ -135,6 +135,8 @@ namespace Content.Server
             factory.Register<BallisticBulletComponent>();
             factory.Register<BallisticMagazineComponent>();
 
+            factory.Register<HitscanWeaponCapacitorComponent>();
+
             factory.Register<CameraRecoilComponent>();
             factory.RegisterReference<CameraRecoilComponent, SharedCameraRecoilComponent>();