Salvage magnet revamp (#23119)

* Generic offering window

* More work

* weh

* Parity

* Progression meter

* magnet

* rona

* PG asteroid work

* code red

* Asteroid spawnings

* clams

* a

* Marker fixes

* More fixes

* Workings of biome asteroids

* A

* Fix this loading code

* a

* Fix masking

* weh

* Fixes

* Magnet claiming

* toe

* petogue

* magnet

* Bunch of fixes

* Fix default

* Fixes

* asteroids

* Fix offerings

* Localisation and a bunch of fixes

* a

* Fixes

* Preliminary draft

* Announcement fixes

* Fixes and bump spawn rate

* Fix asteroid spawns and UI

* More fixes

* Expeditions fix

* fix

* Gravity

* Fix announcement rounding

* a

* Offset tweak

* sus

* jankass

* Fix merge

Content.Shared/Procedural/DungeonGenerators/NoiseDunGen.cs

@@ -0,0 +1,58 @@
+using Content.Shared.Maps;
+using Robust.Shared.Noise;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+
+namespace Content.Shared.Procedural.DungeonGenerators;
+
+/// <summary>
+/// Generates dungeon flooring based on the specified noise.
+/// </summary>
+public sealed partial class NoiseDunGen : IDunGen
+{
+    /*
+     * Floodfills out from 0 until it finds a valid tile.
+     * From here it then floodfills until it can no longer fill in an area and generates a dungeon from that.
+     */
+
+    // At some point we may want layers masking each other like a simpler version of biome code but for now
+    // we'll just make it circular.
+
+    /// <summary>
+    /// How many areas of noise to fill out. Useful if we just want 1 blob area to fill out.
+    /// </summary>
+    [DataField]
+    public int Iterations = int.MaxValue;
+
+    /// <summary>
+    /// Cap on how many tiles to include.
+    /// </summary>
+    [DataField]
+    public int TileCap = 128;
+
+    /// <summary>
+    /// Standard deviation of tilecap.
+    /// </summary>
+    [DataField]
+    public float CapStd = 8f;
+
+    [DataField(required: true)]
+    public List<NoiseDunGenLayer> Layers = new();
+}
+
+[DataRecord]
+public record struct NoiseDunGenLayer
+{
+    /// <summary>
+    /// If the noise value is above this then it gets output.
+    /// </summary>
+    [DataField]
+    public float Threshold;
+
+    [DataField(required: true)]
+    public string Tile;
+
+    [DataField(required: true)]
+    public FastNoiseLite Noise;
+}