eddie-zephyr: Import eddie-zephyr project into a subdirectory

eddie-zephyr implements eddie functionalities for the zephyr OS, the goals are the same of the eddie project, up until now in eddie-zephyr we implemented the resource publishing and discovery.

eddie-zephyr was until now in a separate repository, therefore importing it now into main eddie repository in the eddie-zephyr/ subdirectory. This merge commit has been generated using the git subtree command.

git subtree automatically generated message:
Add 'eddie-zephyr/' from commit 'af538fcb'
git-subtree-dir: eddie-zephyr
git-subtree-mainline: ba6f7670
git-subtree-split: af538fcb

Signed-off-by: Francesco Pham francesco.pham@huawei.com

eddie-zephyr/include/CoapClient.h

+/*
+ * Copyright (c) 2022 Huawei Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __COAPCLIENT_H__
+#define __COAPCLIENT_H__
+
+#include <zephyr/net/socket.h>
+#include <functional>
+#include <string>
+
+#include "Common.h"
+
+class CoapClient {
+private:
+
+    struct sockaddr_in6 destaddr;
+
+    int start_coap_client(char const *dst_host);
+
+    int process_simple_coap_reply(response_handler_t response_handler);
+
+    int send_simple_coap_request(uint8_t method, 
+                                const char * const path[], 
+                                const char * const query[], 
+                                const uint8_t data[], 
+                                size_t data_length,
+                                bool confirmable,
+                                unsigned int content_format);
+                                
+    void close_coap_client();
+
+    uint8_t method_to_coap_method(method_t method);
+
+public:
+
+    int send_request(request_t request, response_handler_t response_handler);
+    
+};
+
+#endif
\ No newline at end of file