Refactor location object into separate module so that it can be used in multiple locations

src/lib/locations-object.svelte.ts

@@ -0,0 +1,26 @@
+	interface LocationRecord {
+		n: string; // name
+		t: string; // tiploc
+		c?: string; // crs
+		s: string; // search string
+	}
+
+class LocationStore {
+    data = $state<LocationRecord[]>([]);
+    loaded = $state(false);
+
+    async init() {
+        if (this.loaded) return;
+
+        try {
+            const res = await fetch('/api/tiplocs');
+            this.data = await res.json();
+            this.loaded = true;
+        } catch (err) {
+            console.error('Failed to load locations', err);
+        }
+    }
+
+}
+
+export const LOCATIONS = new LocationStore();