* Convert boost::asio::io_service to boost::asio::io_context
* Convert strand.wrap(...) to boost::asio::bind_executor(strand, ...)
* Convert strand.dispatch(...) to boost::asio::dispatch(strand, ...)
* Convert io_context.reset() to io_context.restart()
* Convert null_buffers() usage to socket.async_wait(...)
* Drop usage of GET_IO_SERVICE macro from monero
* Refactor REST server to manage resources better
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