Low-Latency ITCH 5.0 Feed Handler

(ITCH 5.0 documentation)[https://www.nasdaqtrader.com/content/technicalsupport/specifications/dataproducts/NQTVITCHSpecification.pdf]

Building

cmake -S . -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_EXPORT_COMPILE_COMMANDS=ON cmake --build build -j ./build/feedhandler ./data/sample_5mb.ITCH_50