Expand RPM DB fields

[wagoodman]

Makes the following adjustments to the RPM DB cataloger:

• adds username
• adds groupname
• adds file flags (c indicates conffile)
• add digest algorithm
• replaces the SHA256 field with the shared definition for file.Digest

Partially addresses #371

[github-actions]

Benchmark Test Results

Benchmark results from the latest changes vs base branch

name                                                   old time/op    new time/op    delta
ImagePackageCatalogers/ruby-gemspec-cataloger-2           685µs ± 2%     928µs ± 1%  +35.59%  (p=0.008 n=5+5)
ImagePackageCatalogers/python-package-cataloger-2         857µs ± 4%    1119µs ± 1%  +30.62%  (p=0.008 n=5+5)
ImagePackageCatalogers/javascript-package-cataloger-2     358µs ± 3%     472µs ± 1%  +31.89%  (p=0.008 n=5+5)
ImagePackageCatalogers/dpkgdb-cataloger-2                 334µs ± 4%     449µs ± 3%  +34.42%  (p=0.008 n=5+5)
ImagePackageCatalogers/rpmdb-cataloger-2                  353µs ± 3%     476µs ± 2%  +34.71%  (p=0.008 n=5+5)
ImagePackageCatalogers/java-cataloger-2                  4.66ms ± 7%    6.25ms ± 0%  +34.00%  (p=0.016 n=5+4)
ImagePackageCatalogers/apkdb-cataloger-2                  521µs ± 8%     635µs ± 1%  +22.04%  (p=0.008 n=5+5)
ImagePackageCatalogers/go-cataloger-2                     177µs ± 4%     237µs ± 2%  +34.08%  (p=0.008 n=5+5)
ImagePackageCatalogers/rust-cataloger-2                   278µs ± 4%     376µs ± 2%  +35.01%  (p=0.008 n=5+5)

name                                                   old alloc/op   new alloc/op   delta
ImagePackageCatalogers/ruby-gemspec-cataloger-2          92.1kB ± 0%    92.0kB ± 0%   -0.08%  (p=0.008 n=5+5)
ImagePackageCatalogers/python-package-cataloger-2         480kB ± 0%     480kB ± 0%     ~     (p=0.690 n=5+5)
ImagePackageCatalogers/javascript-package-cataloger-2     109kB ± 0%     109kB ± 0%     ~     (p=0.841 n=5+5)
ImagePackageCatalogers/dpkgdb-cataloger-2                 114kB ± 0%     114kB ± 0%   -0.08%  (p=0.032 n=5+5)
ImagePackageCatalogers/rpmdb-cataloger-2                  134kB ± 0%     134kB ± 0%   +0.19%  (p=0.008 n=5+5)
ImagePackageCatalogers/java-cataloger-2                  1.69MB ± 0%    1.69MB ± 0%     ~     (p=0.151 n=5+5)
ImagePackageCatalogers/apkdb-cataloger-2                 1.13MB ± 0%    1.13MB ± 0%     ~     (p=0.802 n=5+5)
ImagePackageCatalogers/go-cataloger-2                    47.8kB ± 0%    47.9kB ± 0%   +0.13%  (p=0.008 n=5+5)
ImagePackageCatalogers/rust-cataloger-2                  87.3kB ± 0%    87.3kB ± 0%   -0.00%  (p=0.016 n=5+4)

name                                                   old allocs/op  new allocs/op  delta
ImagePackageCatalogers/ruby-gemspec-cataloger-2           1.95k ± 0%     1.95k ± 0%     ~     (all equal)
ImagePackageCatalogers/python-package-cataloger-2         5.47k ± 0%     5.47k ± 0%     ~     (all equal)
ImagePackageCatalogers/javascript-package-cataloger-2     1.92k ± 0%     1.92k ± 0%     ~     (all equal)
ImagePackageCatalogers/dpkgdb-cataloger-2                 2.36k ± 0%     2.36k ± 0%     ~     (all equal)
ImagePackageCatalogers/rpmdb-cataloger-2                  3.18k ± 0%     3.19k ± 0%   +0.28%  (p=0.008 n=5+5)
ImagePackageCatalogers/java-cataloger-2                   22.0k ± 0%     22.0k ± 0%     ~     (p=0.444 n=5+5)
ImagePackageCatalogers/apkdb-cataloger-2                  1.79k ± 0%     1.79k ± 0%     ~     (p=0.556 n=5+4)
ImagePackageCatalogers/go-cataloger-2                     1.39k ± 0%     1.39k ± 0%     ~     (all equal)
ImagePackageCatalogers/rust-cataloger-2                   2.74k ± 0%     2.74k ± 0%     ~     (all equal)

[alfredodeza]