Gun refactor (#8301)

Co-authored-by: Kara <lunarautomaton6@gmail.com>
Co-authored-by: T-Stalker <le0nel_1van@hotmail.com>
Co-authored-by: T-Stalker <43253663+DogZeroX@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <metalgearsloth@gmail.com>

Content.Client/Weapons/Ranged/Systems/GunSystem.Ballistic.cs

@@ -0,0 +1,48 @@
+using Content.Shared.Weapons.Ranged.Components;
+using Robust.Shared.Map;
+
+namespace Content.Client.Weapons.Ranged.Systems;
+
+public sealed partial class GunSystem
+{
+    protected override void InitializeBallistic()
+    {
+        base.InitializeBallistic();
+        SubscribeLocalEvent<BallisticAmmoProviderComponent, UpdateAmmoCounterEvent>(OnBallisticAmmoCount);
+    }
+
+    private void OnBallisticAmmoCount(EntityUid uid, BallisticAmmoProviderComponent component, UpdateAmmoCounterEvent args)
+    {
+        if (args.Control is DefaultStatusControl control)
+        {
+            control.Update(GetBallisticShots(component), component.Capacity);
+            return;
+        }
+    }
+
+    protected override void Cycle(BallisticAmmoProviderComponent component, MapCoordinates coordinates)
+    {
+        if (!Timing.IsFirstTimePredicted) return;
+
+        EntityUid? ent = null;
+
+        // TODO: Combine with TakeAmmo
+        if (component.Entities.Count > 0)
+        {
+            var existing = component.Entities[^1];
+            component.Entities.RemoveAt(component.Entities.Count - 1);
+
+            component.Container.Remove(existing);
+            EnsureComp<AmmoComponent>(existing);
+        }
+        else if (component.UnspawnedCount > 0)
+        {
+            component.UnspawnedCount--;
+            ent = Spawn(component.FillProto, coordinates);
+            EnsureComp<AmmoComponent>(ent.Value);
+        }
+
+        if (ent != null && ent.Value.IsClientSide())
+            Del(ent.Value);
+    }
+}