Openvino tensor representation

[SzabolcsGergely]

Changelog:

Removed:

float16_to_float32_converter.hpp, replaced with half.hpp in depthai-shared
landmarks_parser.hpp
mobilenet_metadata.hpp
tensor_entry.hpp 
tensor_entry_container.hpp 
tensor_info.hpp -> moved to depthai-shared
tensor_info_helper.hpp
types.hpp -> moved to depthai-shared
types.cpp

Added:

Packet data in host_data_packet.hpp is wrapped in shared_ptr
getDetectedObjects(), reinterpret cast of the received metaout, copy-less, wrapped in shared_ptr