Builds the Linux packages with CPack.
Generate them by running Conan with `--options:host "&:package=True"
--options:host "&:static=True"` then after the build you can run `cpack
.` in the build directory.
@mathbunnyru Where do you think this should be built? QA needs a package
per-commit.
@godexsoft What to do with the `config.json` and service file. I can
just remove them or strip the comment out but it still won't work out
the box with the default `rippled.cfg`. Relates to #2191.
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Co-authored-by: Ayaz Salikhov <mathbunnyru@users.noreply.github.com>
