Add copy, paste, copy to new and delete buttons

src/components/sound-editor/icon--copy-to-new.svg

src/components/sound-editor/icon--copy.svg

src/components/sound-editor/icon--delete.svg

src/components/sound-editor/icon--lounder.svg

src/components/sound-editor/icon--paste.svg

src/components/sound-editor/sound-editor.css

src/components/sound-editor/sound-editor.jsx

src/containers/sound-editor.jsx