start the assignment of boundaries for a local search

src/db/tables/settings.ts

@@ -1,3 +1,10 @@
+export type BoundingBox = {
+  maxLat: number;
+  maxLong: number;
+  minLat: number;
+  minLong: number;
+};
+
 // a singleton
 export type Settings = {
   id: number; // there's only one entry: MASTER_SETTINGS_KEY
@@ -7,6 +14,7 @@ export type Settings = {
   firstName?: string;
   lastName?: string;
   lastViewedClaimId?: string;
+  searchBoxes?: Array<BoundingBox>;
   showContactGivesInline?: boolean;
 };