Fix network templates

aidge_export_arm_cortexm/templates/network/dnn_header.jinja

 {#- For name header -#}
-#ifndef DNN_HPP
-#define DNN_HPP
+#ifndef DNN_H
+#define DNN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 {#- For libraries #}
 {% for lib in libraries %}
@@ -11,5 +15,8 @@
 {{ func }}
 {% endfor %}
 
+#ifdef __cplusplus
+}
+#endif
 
-#endif /* DNN_HPP */
+#endif /* DNN_H */
\ No newline at end of file

aidge_export_arm_cortexm/templates/network/network_forward.jinja

@@ -2,7 +2,8 @@
 
 #include <stdint.h>
 
-#include "include/network_functions.h"
+#include "dnn.h"
+#include "network_functions.h"
 
 // Layer & memory configurations
 {%- for header in headers %}

aidge_export_arm_cortexm/templates/network/network_prototypes.jinja

@@ -7,6 +7,10 @@
 #include <{{ lib }}>
 {%- endfor %}
 
+{% for file in files %}
+#include "{{ file }}"
+{%- endfor %}
+
 {% for func in functions %}
 {{ func }}
 {% endfor %}