fix: Error category handling #742
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A std::error_code stores the error category only by reference, hence, we must use an object in static storage. Add lldpcli::make_error_code for convenience similar to std::make_error_code.
Directly pass error code to std::system_error.
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A
std::error_codestores the error category only by reference, hence, we must use an object in static storage.This PR creates a static error category object and provides
lldpcli::make_error_codefor convenience, similar to std::make_error_code.