Refactor actions to be entities with components (#19900)

Content.Shared/Magic/ISpeakSpell.cs

@@ -0,0 +1,9 @@
+namespace Content.Shared.Magic;
+
+public interface ISpeakSpell // The speak n spell interface
+{
+    /// <summary>
+    /// Localized string spoken by the caster when casting this spell.
+    /// </summary>
+    public string? Speech { get; }
+}