Update file filters for export generation and profile export

- Modified the file extension filters in useHistory.ts and useProfiles.ts to only allow 'zip' files, removing 'voicebox.zip' for a more streamlined export process.
- Added user-selected read-write permission in Entitlements.plist to enhance file handling capabilities.

app/src/lib/hooks/useHistory.ts

@@ -47,7 +47,7 @@ export function useExportGeneration() {
             filters: [
               {
                 name: 'Voicebox Generation',
-                extensions: ['voicebox.zip', 'zip'],
+                extensions: ['zip'],
               },
             ],
           });

app/src/lib/hooks/useProfiles.ts

@@ -135,7 +135,7 @@ export function useExportProfile() {
             filters: [
               {
                 name: 'Voicebox Profile',
-                extensions: ['voicebox.zip', 'zip'],
+                extensions: ['zip'],
               },
             ],
           });