Add arrivals (#14755)

* Arrivals

* More arrivals and shitty uhh preload

* cvar

* a

* clockin + maps

* shitter prevention

* Placement

* a

* cvar for tests and dev

* weh

Content.Shared/Tiles/FloorTileComponent.cs

@@ -0,0 +1,21 @@
+using Content.Shared.Maps;
+using Robust.Shared.Audio;
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+
+namespace Content.Shared.Tiles
+{
+    /// <summary>
+    /// This gives items floor tile behavior, but it doesn't have to be a literal floor tile.
+    /// A lot of materials use this too. Note that the AfterInteract will fail without a stack component on the item.
+    /// </summary>
+    [RegisterComponent, NetworkedComponent]
+    public sealed class FloorTileComponent : Component
+    {
+        [DataField("outputs", customTypeSerializer: typeof(PrototypeIdListSerializer<ContentTileDefinition>))]
+        public List<string>? OutputTiles;
+
+        [DataField("placeTileSound")]
+        public SoundSpecifier PlaceTileSound = new SoundPathSpecifier("/Audio/Items/genhit.ogg");
+    }
+}