alphabet → nucleotide Relation

File in seqan3/alphabet	Includes file in seqan3/alphabet/nucleotide
all.hpp	all.hpp
aminoacid / translation_details.hpp	concept.hpp
aminoacid / translation_details.hpp	dna15.hpp
detail / alphabet_proxy.hpp	concept.hpp
quality / aliases.hpp	all.hpp
quality / qualified.hpp	concept.hpp
structure / structured_rna.hpp	concept.hpp