Converts the particle accelerator over to ECS + misc (#17075)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/ParticleAccelerator/EntitySystems/ParticleAcceleratorSystem.cs

@@ -1,7 +1,23 @@
+using Content.Server.Administration.Logs;
+using Content.Server.Projectiles;
+using Robust.Shared.Physics.Systems;
+using Robust.Shared.Map;
+using Robust.Shared.Timing;
+using Robust.Server.GameObjects;
+
 namespace Content.Server.ParticleAccelerator.EntitySystems;
 
 public sealed partial class ParticleAcceleratorSystem : EntitySystem
 {
+    [Dependency] private readonly IAdminLogManager _adminLogger = default!;
+    [Dependency] private readonly IGameTiming _gameTiming = default!;
+    [Dependency] private readonly IMapManager _mapManager = default!;
+    [Dependency] private readonly ProjectileSystem _projectileSystem = default!;
+    [Dependency] private readonly SharedAppearanceSystem _appearanceSystem = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physicsSystem = default!;
+    [Dependency] private readonly SharedTransformSystem _transformSystem = default!;
+    [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
+
     public override void Initialize()
     {
         base.Initialize();