Add cargo shuttle (#8686)

Content.Server/Cargo/Components/StationBankAccountComponent.cs

@@ -0,0 +1,19 @@
+using Content.Shared.Cargo;
+
+namespace Content.Server.Cargo.Components;
+
+/// <summary>
+/// Added to the abstract representation of a station to track its money.
+/// </summary>
+[RegisterComponent, Access(typeof(SharedCargoSystem))]
+public sealed class StationBankAccountComponent : Component
+{
+    [ViewVariables(VVAccess.ReadWrite), DataField("balance")]
+    public int Balance = 2000;
+
+    /// <summary>
+    /// How much the bank balance goes up per second, every Delay period. Rounded down when multiplied.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite), DataField("increasePerSecond")]
+    public int IncreasePerSecond = 10;
+}