refactor: statistics on result set

Refactored statistics script to it's own directory such that we can use it as a node js service later down the road.

libs/shared/lib/data-access/store/graphQueryResultSlice.ts

 import { createSlice, PayloadAction } from '@reduxjs/toolkit';
 import type { RootState } from './store';
 import { getDimension, extractStatistics, GraphMetadata } from '../statistics';
+import { getGraphStatistics } from '../../statistics';
 
 export interface GraphQueryResultFromBackendPayload {
   queryID: string;
@@ -127,6 +128,7 @@ export const graphQueryBackend2graphQuery = (payload: GraphQueryResultFromBacken
     _edge.label = edgeType;
     return _edge;
   });
+
   return { metaData: extractStatistics(metaData), nodes, edges };
 };