Add linter-friendly WeightedRandom prototypes (#18729)

Content.Shared/Random/WeightedRandomEntityPrototype.cs

@@ -0,0 +1,17 @@
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Dictionary;
+
+namespace Content.Shared.Random;
+
+/// <summary>
+/// Linter-friendly version of weightedRandom for Entity prototypes.
+/// </summary>
+[Prototype("weightedRandomEntity")]
+public sealed class WeightedRandomEntityPrototype : IWeightedRandomPrototype
+{
+    [IdDataField]
+    public string ID { get; } = default!;
+
+    [DataField("weights", customTypeSerializer: typeof(PrototypeIdDictionarySerializer<float, EntityPrototype>))]
+    public Dictionary<string, float> Weights { get; } = new();
+}