Moved graph data structures into common folder

src/common/datasets.js

src/common/graph.ts

src/display/components/nodeinfo/neighbors.tsx

src/display/components/nodeinfo/nodeinfobar.tsx

src/display/components/searchbar.tsx

src/display/display.tsx

src/display/renderer.tsx

src/editor/js/editor.js

src/editor/js/interactions.js

src/editor/js/tools/savetool.js