New: History custom filters

Co-authored-by: Mark McDowall <mark@mcdowall.ca>

frontend/src/App/State/AppSectionState.ts

@@ -1,4 +1,5 @@
 import SortDirection from 'Helpers/Props/SortDirection';
+import { FilterBuilderProp } from './AppState';
 
 export interface Error {
   responseJSON: {
@@ -20,6 +21,10 @@ export interface PagedAppSectionState {
   pageSize: number;
 }
 
+export interface AppSectionFilterState<T> {
+  filterBuilderProps: FilterBuilderProp<T>[];
+}
+
 export interface AppSectionSchemaState<T> {
   isSchemaFetching: boolean;
   isSchemaPopulated: boolean;