Adding a basic mechanism to choose overlays (not operational yet)

src/workers/dispatcher-worker.ts

@@ -12,6 +12,7 @@ import {
   getAllGpxes,
   getAllGpxesWithSummary,
 } from '../db/gpx';
+import { putOverlays } from '../db/overlays';
 import { putRte } from '../db/rte';
 import { putRtept } from '../db/rtept';
 import { getSettings, putSettings } from '../db/settings';
@@ -59,6 +60,8 @@ onmessage = async function (e) {
     getState,
     setState,
 
+    putOverlays,
+
     getAndWatch,
     cancelWatch,