(feat): add cache package

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

packages/shared/src/desktopMedia.tsx

@@ -38,6 +38,13 @@ type ElectronDesktopApi = {
       iconDataUrl?: string;
     }) => Promise<void>;
   };
+  secureStorage?: {
+    getStatus?: () => Promise<{ available: boolean; backend: string | null }>;
+    load?: (key: string) => Promise<string | null>;
+    save?: (key: string, value: string) => Promise<void>;
+    delete?: (key: string) => Promise<void>;
+    clear?: () => Promise<void>;
+  };
 };
 
 declare global {