Feat: List roles page (WMS-40) (#55)

* feat: list roles page with api integration
* Update: added dispatch on first load

src/sagas/index.js

@@ -2,9 +2,11 @@ import { all } from 'redux-saga/effects';
 import AuthSaga from './Auth';
 import WarehouseSaga from './Warehouse';
 import UsersSaga from './Users';
+import RolesSaga from './Roles';
 
 export default function* rootSaga() {
   yield all([...AuthSaga]);
   yield all([...WarehouseSaga]);
   yield all([...UsersSaga]);
+  yield all([...RolesSaga]);
 }