Move ChatSystem.Emotes to shared (#40866)

* move to shared

* entity effect to shared

* refactor: whitespaces+xml-doc typo fixups

* refactor: a little bit more of xml-doc typos fixups

---------

Co-authored-by: pa.pecherskij <pa.pecherskij@interfax.ru>

Content.Shared/Emoting/EmoteEvents.cs

@@ -1,27 +1,6 @@
-using Content.Shared.Chat.Prototypes;
-using Content.Shared.Inventory;
-
-namespace Content.Shared.Emoting;
+namespace Content.Shared.Emoting;
 
 public sealed class EmoteAttemptEvent(EntityUid uid) : CancellableEntityEventArgs
 {
     public EntityUid Uid { get; } = uid;
 }
-
-/// <summary>
-/// An event raised just before an emote is performed, providing systems with an opportunity to cancel the emote's performance.
-/// </summary>
-[ByRefEvent]
-public sealed class BeforeEmoteEvent(EntityUid source, EmotePrototype emote)
-    : CancellableEntityEventArgs, IInventoryRelayEvent
-{
-    public readonly EntityUid Source = source;
-    public readonly EmotePrototype Emote = emote;
-
-    /// <summary>
-    ///     The equipment that is blocking emoting. Should only be non-null if the event was canceled.
-    /// </summary>
-    public EntityUid? Blocker = null;
-
-    public SlotFlags TargetSlots => SlotFlags.WITHOUT_POCKET;
-}