perspective snapshot language integration

[weswalla]

test failing with following message:

    src/core/graphQL-interface/GraphQL.ts:4:32 - error TS7016: Could not find a declaration file for module '@perspect3vism/ad4m/lib/typeDefs'. '/home/wesley/1_Projects/perspect3vism/ad4m/lib/typeDefs.js' implicitly has an 'any' type.
      Try `npm i --save-dev @types/perspect3vism__ad4m` if it exists or add a new declaration (.d.ts) file containing `declare module '@perspect3vism/ad4m/lib/typeDefs';`

    4 import { typeDefsString } from '@perspect3vism/ad4m/lib/typeDefs'