add: add initial api docs fo /taxonomies endpoints.
add: add initial api docs fo /taxonomies endpoints.

MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP