Add Dockerfile and scripts to fusion_parser module to arriba_fusion.nf

src/.docker_modules/fusion_parser/1.0/Dockerfile

src/.docker_modules/fusion_parser/1.0/docker_init.sh

src/.docker_modules/fusion_parser/1.0/fusion_parser.R

src/.docker_modules/fusion_parser/1.0/install_pkgs.R

src/arriba_fusion.nf

src/nf_modules/arriba/main.nf

src/nf_modules/fusion_parser/main.nf