Station Anchor (#26098)

* Work on abstracting out chargeup functionality/ui from grav gen

* Work on station anchor

* Finish implementing station anchors

* uhh yeah

* ok.

* fix tests

* whoops

* Get the last extraneous yaml fail

* PJB review

* beast mode... ACTIVATE!

---------

Co-authored-by: Ed <96445749+TheShuEd@users.noreply.github.com>
Co-authored-by: EmoGarbage404 <retron404@gmail.com>

Content.Server/Power/Components/PowerChargeComponent.cs

@@ -0,0 +1,66 @@
+using Content.Server.Power.EntitySystems;
+using Content.Shared.Power;
+
+namespace Content.Server.Power.Components;
+
+/// <inheritdoc cref="Content.Shared.Power.SharedPowerChargeComponent" />
+[RegisterComponent]
+[Access(typeof(PowerChargeSystem))]
+public sealed partial class PowerChargeComponent : SharedPowerChargeComponent
+{
+    /// <summary>
+    /// Change in charge per second.
+    /// </summary>
+    [DataField]
+    public float ChargeRate { get; set; } = 0.01f;
+
+    /// <summary>
+    /// Baseline power that this machine consumes.
+    /// </summary>
+    [DataField("idlePower")]
+    public float IdlePowerUse { get; set; }
+
+    /// <summary>
+    /// Power consumed when <see cref="SwitchedOn"/> is true.
+    /// </summary>
+    [DataField("activePower")]
+    public float ActivePowerUse { get; set; }
+
+    /// <summary>
+    /// Is the gravity generator intact?
+    /// </summary>
+    [DataField]
+    public bool Intact { get; set; } = true;
+
+    /// <summary>
+    /// Is the power switch on?
+    /// </summary>
+    [DataField]
+    public bool SwitchedOn { get; set; } = true;
+
+    /// <summary>
+    /// Whether or not the power is switched on and the entity has charged up.
+    /// </summary>
+    [DataField]
+    public bool Active { get; set; }
+
+    [DataField]
+    public float MaxCharge { get; set; } = 1;
+
+    /// <summary>
+    /// The UI key of the UI that's used with this machine.<br/>
+    /// This is used to allow machine power charging to be integrated into any ui
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadOnly)]
+    public Enum UiKey { get; set; } = PowerChargeUiKey.Key;
+
+    /// <summary>
+    /// Current charge value.
+    /// Goes from 0 to 1.
+    /// </summary>
+    [DataField]
+    public float Charge { get; set; } = 1;
+
+    [ViewVariables]
+    public bool NeedUIUpdate { get; set; }
+}