feat: add missing types and resolvers

lib/new-admin/bills.js

@@ -1,25 +0,0 @@
-const db = require('../db')
-
-// Get all bills with device id
-const getBills = () => {
-  return Promise.reject(new Error('This functionality hasn\'t been implemented yet'))
-/*   return db.any(`
-  SELECT d.device_id, b.fiat, b.created, d.cashbox
-    FROM cash_in_txs
-      INNER JOIN bills AS b ON b.cash_in_txs_id = cash_in_txs.id
-        INNER JOIN devices as d ON d.device_id = cash_in_txs.device_id
-    ORDER BY device_id, created DESC`
-  )
-    .then(res => {
-      return res.map(item => ({
-        fiat: item.fiat,
-        deviceId: item.device_id,
-        cashbox: item.cashbox,
-        created: item.created
-      }))
-    }) */
-}
-
-module.exports = {
-  getBills
-}