New: Indexer flags

Closes #2782

frontend/src/Store/Selectors/createIndexerFlagsSelector.ts

@@ -0,0 +1,9 @@
+import { createSelector } from 'reselect';
+import AppState from 'App/State/AppState';
+
+const createIndexerFlagsSelector = createSelector(
+  (state: AppState) => state.settings.indexerFlags,
+  (indexerFlags) => indexerFlags
+);
+
+export default createIndexerFlagsSelector;