adds the ability to "mix" solutions (reactions caused by using an item on a solution holder) (#13015)

* everything for mixing aside from yaml changes

* add recipe and canmix to bottles and the holy mixer tag to the bible

* fixes as a result of testing

* remove unused usings

* remove emptylines that are not required

Co-authored-by: 0x6273 <0x40@keemail.me>

* more empty line removal!

Co-authored-by: 0x6273 <0x40@keemail.me>

* add single space between if statement and condition

Co-authored-by: 0x6273 <0x40@keemail.me>

* fixes indentation on TryGetMixableSolution

* raise new AfterMixingEvent after attempting to mix a solution

* before mixing event and attempt get mixable solution event

* update reaction tests to be a beaker that can be mixed, and then pass a mixer component in to simulate mixing

* make two more beaker types mixable, add attribute for mixing feedback

* bible mix message

* mixing feedback on success

* updates test to use SpawnEntity over new as per feedback

Co-authored-by: 0x6273 <0x40@keemail.me>

Content.Shared/Chemistry/Reaction/ReactionMixerComponent.cs

@@ -0,0 +1,29 @@
+using Content.Shared.Chemistry.Components;
+
+namespace Content.Shared.Chemistry.Reaction;
+
+[RegisterComponent]
+public sealed class ReactionMixerComponent : Component
+{
+    /// <summary>
+    ///     A list of IDs for categories of reactions that can be mixed (i.e. HOLY for a bible, DRINK for a spoon)
+    /// </summary>
+    [ViewVariables]
+    [DataField("reactionTypes")]
+    public List<string> ReactionTypes = default!;
+
+    /// <summary>
+    ///     A string which identifies the string to be sent when successfully mixing a solution
+    /// </summary>
+    [ViewVariables]
+    [DataField("mixMessage")]
+    public string MixMessage = "default-mixing-success";
+}
+
+[ByRefEvent]
+public record struct MixingAttemptEvent(EntityUid Mixed, bool Cancelled = false);
+
+public readonly record struct AfterMixingEvent(EntityUid Mixed, EntityUid Mixer);
+
+[ByRefEvent]
+public record struct GetMixableSolutionAttemptEvent(EntityUid Mixed, Solution? MixedSolution = null);