Several (potentially even external) libraries might want
to use our mock data and some utils. I pulled them
out into a lib with a package.json

This reverts commit 2c26f4ed.

This feature introduces @graphpolaris/shared/graph-layout with
four layouts (circular, noverlap, random, forceatlas2)

Shows how to apply layouts to graphology graphs in the schema.

Provides schema, queryresult, etc. in one place