Retry timed out requests to support poorly characterized non-real-time networks

[pavel-kirienko]

One is unlikely to encounter packet loss if the network is well-designed, but developers often have to deal with overloaded networks where the timing guarantees expected by Cyphal are not upheld.

Extend the FileLocationSpecifier with the number of requests made:

kocherga/kocherga/kocherga.hpp

Lines 885 to 892 in 85f24d4

	struct FileLocationSpecifier
	{
	std::uint8_t local_node_index{};
	NodeID server_node_id{};
	std::size_t path_length{};
	std::array<std::uint8_t, dsdl::File::PathCapacity> path{};
	std::optional<std::chrono::microseconds> response_deadline{};
	};

[pavel-kirienko]

Done in #19