add .BoardConfig.mk package-file

hc

2023-05-31 43fd8d44e8182b691c8ee61d487cec02ca11afd2

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# Locally computed using sha256sum
sha256    f8d60f822e914128bcbc5f64fbe3ed131cbff9045dca7e12c5b77b26edde72ca    dvd+rw-tools-7.1.tar.gz