Release v1.0

Created the new repository zed-ros-interfaces which contains the ROS package zed_interfaces defining the custom topics, services and actions used by the zed-ros-wrapper. This new package is useful to receive the topics from a ZED node on system where the zed-ros-wrapper package is not installed, e.g systems without CUDA support.
Added new service save_memory_map to save the current area memory to a file to be used in future node running for relocation.
Added new service save_3d_map to save the current 3D fused point cloud as OBJ or PLY file

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