full sticky prediction (#30230)

* move all sticky stuff to shared and cleanup/grammar fix

* update imports and ref

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/Sticky/EntityStuckEvent.cs

@@ -0,0 +1,26 @@
+namespace Content.Shared.Sticky;
+
+/// <summary>
+///     Risen on sticky entity to see if it can stick to another entity.
+/// </summary>
+[ByRefEvent]
+public record struct AttemptEntityStickEvent(EntityUid Target, EntityUid User, bool Cancelled = false);
+
+/// <summary>
+///     Risen on sticky entity to see if it can unstick from another entity.
+/// </summary>
+[ByRefEvent]
+public record struct AttemptEntityUnstickEvent(EntityUid Target, EntityUid User, bool Cancelled = false);
+
+
+/// <summary>
+///     Risen on sticky entity when it was stuck to other entity.
+/// </summary>
+[ByRefEvent]
+public record struct EntityStuckEvent(EntityUid Target, EntityUid User);
+
+/// <summary>
+///     Risen on sticky entity when it was unstuck from other entity.
+/// </summary>
+[ByRefEvent]
+public record struct EntityUnstuckEvent(EntityUid Target, EntityUid User);