Add reaction randomization. (#308)

* Add random products datafield to the reaciton prototype.

One of the items in the list will be used as additional products as a
result of the reaction and will be persistent per round.

Resolves #245

* Another try

Add getter and setter for the reaction products field and
add random products there.

* There is no such product as CP14BasicEffectHealHeat

* Try to visualize random products in the guidebook

* experimental recipes

* fix

* file restructurization

* Guidebook alchemy update

* Update Alchemy.xml

* fix

* Update mixing_simple.yml

---------

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

Content.Server/_CP14/Alchemy/Components/CP14SolutionNormalizerComponent.cs

@@ -0,0 +1,40 @@
+
+using Content.Shared.FixedPoint;
+using Robust.Shared.Audio;
+
+namespace Content.Server._CP14.Alchemy;
+
+/// <summary>
+/// gradually rounds down all reagents in the specified solution
+/// </summary>
+[RegisterComponent, Access(typeof(CP14SolutionNormalizerSystem))]
+public sealed partial class CP14SolutionNormalizerComponent : Component
+{
+    [DataField(required: true)]
+    public string Solution = string.Empty;
+
+    /// <summary>
+    /// will round down any reagent in solution until it is divisible by this value
+    /// </summary>
+    [DataField]
+    public float Factor = 0.25f;
+
+    /// <summary>
+    /// the reagent will flow gradually by the specified number until it becomes normalized
+    /// </summary>
+    [DataField]
+    public FixedPoint2 LeakageQuantity = 0.05f;
+
+    [DataField]
+    public TimeSpan UpdateFrequency = TimeSpan.FromSeconds(4f);
+
+    [DataField]
+    public TimeSpan NextUpdateTime = TimeSpan.Zero;
+
+    [DataField]
+    public SoundSpecifier NormalizeSound = new SoundPathSpecifier("/Audio/Ambience/Objects/drain.ogg")
+    {
+        Params = AudioParams.Default.WithVariation(0.03f)
+    };
+}
+