feat: create surgery booking event

Author: andrea-acampora

src/main/kotlin/entities/events/SurgeryBookingEvent.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package entities.events
+
+/**
+ * The event of a surgery booking.
+ */
+data class SurgeryBookingEvent<E : Any> (
+
+    override val key: String = "SURGERY_BOOKING_EVENT",
+
+    override val data: E,
+
+    override val dateTime: String
+) : Event<E>