feat: create event consumer interface

Author: andrea-acampora

src/main/kotlin/application/presenter/EventConsumer.kt

@@ -0,0 +1,32 @@
+/*
+ * 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 application.presenter
+
+import entities.events.Event
+import io.reactivex.rxjava3.core.FlowableEmitter
+
+/**
+ * The consumer of events.
+ * It's responsible to consume events and to emit them to an Observer.
+ */
+interface EventConsumer<in E> {
+
+    /**
+     * The function to start the consumer.
+     * @param emitter the emitter of events.
+     */
+    fun start(emitter: FlowableEmitter<Event<Any>>)
+
+    /**
+     * The function fon consuming events.
+     * @param inputEvent the input event.
+     * @return the parsed Event.
+     */
+    fun consumeEvent(inputEvent: E): Event<*>
+}