cm: communication: add communication interface

This patch adds a new communication interface to the cm module
with API needed for storage state module.

Signed-off-by: Mykhailo Lohvynenko <[email protected]>

Author: mlohvynenko

include/aos/cm/communication/communication.hpp

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2025 EPAM Systems, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef AOS_CM_COMMUNICATION_HPP_
+#define AOS_CM_COMMUNICATION_HPP_
+
+#include "aos/common/cloudprotocol/state.hpp"
+#include "aos/common/types.hpp"
+
+namespace aos::cm::communication {
+
+/** @addtogroup cm Communication Manager
+ *  @{
+ */
+
+/**
+ * Communication interface.
+ */
+class CommunicationItf {
+public:
+    /**
+     * Sends instances new state.
+     *
+     * @param newState new state to send.
+     * @return Error.
+     */
+    virtual Error SendInstanceNewState(const cloudprotocol::NewState& newState) = 0;
+
+    /**
+     * Sends instances update state.
+     *
+     * @param updateState update state to send.
+     * @return Error.
+     */
+    virtual Error SendInstanceStateRequest(const cloudprotocol::StateRequest& stateRequest) = 0;
+
+    /**
+     * Destructor.
+     */
+    virtual ~CommunicationItf() = default;
+};
+
+} // namespace aos::cm::communication
+
+#endif