Add indexeddb storage

package-lock.json

@@ -18,6 +18,7 @@
         "@welshman/store": "^0.0.2",
         "@welshman/util": "^0.0.25",
         "daisyui": "^4.12.10",
+        "idb": "^8.0.0",
         "nostr-tools": "^2.7.2",
         "prettier-plugin-tailwindcss": "^0.6.5",
         "throttle-debounce": "^5.0.2"
@@ -2724,6 +2725,11 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/idb": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/idb/-/idb-8.0.0.tgz",
+      "integrity": "sha512-l//qvlAKGmQO31Qn7xdzagVPPaHTxXx199MhrAFuVBTPqydcPYBWjkrbv4Y0ktB+GmWOiwHl237UUOrLmQxLvw=="
+    },
     "node_modules/ignore": {
       "version": "5.3.1",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.1.tgz",