(feat): add cache package

(feat): improve local storage security
(feat): move settings to dedicated settings package

packages/shared/package.json

@@ -9,6 +9,7 @@
     "./data": "./src/data.ts",
     "./desktopMedia": "./src/desktopMedia.tsx",
     "./log": "./src/log.tsx",
+    "./indexedDb": "./src/indexedDb.ts",
     "./settings": "./src/settings.ts",
     "./features/legal/schema": "./src/features/legal/schema.ts",
     "./features/conversation/schema": "./src/features/conversation/schema.ts"