feat: add backup recommendations and update backup strategy UI

- Introduced new backup recommendations feature with interfaces for recommended storage providers.
- Updated i18n translations for backup strategy to reflect new terminology and improved descriptions.
- Enhanced types with optional private and public keys in user profiles.
- Redesigned backup-related styles for better layout and responsiveness.
- Updated TypeScript configuration to include shared modules.
- Configured Vite to resolve shared modules and allow filesystem access.
- Added cron triggers for periodic tasks in Wrangler configuration.

webapp/src/lib/backup-recommendations.ts

@@ -0,0 +1,68 @@
+export interface RecommendedStorageLink {
+  name: string;
+  capacity: string;
+}
+
+export interface RecommendedProviderBase {
+  id: 'infinicloud' | 'koofr' | 'pcloud';
+  name: string;
+  capacity: string;
+  protocol: 'webdav' | 's3';
+  signupUrl: string;
+  hasAffiliateLink?: boolean;
+}
+
+export interface InfinicloudProvider extends RecommendedProviderBase {
+  id: 'infinicloud';
+  referralCode: string;
+}
+
+export interface KoofrProvider extends RecommendedProviderBase {
+  id: 'koofr';
+  passwordUrl: string;
+  storageUrl: string;
+  linkedStorages: RecommendedStorageLink[];
+}
+
+export interface PcloudProvider extends RecommendedProviderBase {
+  id: 'pcloud';
+}
+
+export type RecommendedProvider = InfinicloudProvider | KoofrProvider | PcloudProvider;
+
+export const RECOMMENDED_PROVIDERS: RecommendedProvider[] = [
+  {
+    id: 'infinicloud',
+    name: 'InfiniCLOUD',
+    capacity: '25G',
+    protocol: 'webdav',
+    signupUrl: 'https://infini-cloud.net/en/',
+    referralCode: '2HC5E',
+  },
+  {
+    id: 'koofr',
+    name: 'Koofr',
+    capacity: '10G',
+    protocol: 'webdav',
+    signupUrl: 'https://app.koofr.net/signup',
+    passwordUrl: 'https://app.koofr.net/app/admin/preferences/password',
+    storageUrl: 'https://app.koofr.net/app/storage/',
+    linkedStorages: [
+      { name: 'Google Drive', capacity: '15G' },
+      { name: 'OneDrive', capacity: '5G' },
+      { name: 'Dropbox', capacity: '2G' },
+    ],
+  },
+  {
+    id: 'pcloud',
+    name: 'pCloud',
+    capacity: '10G',
+    protocol: 'webdav',
+    signupUrl: 'https://u.pcloud.com/#/register?invite=GITx7ZvEU1N7',
+    hasAffiliateLink: true,
+  },
+];
+
+export function hasLinkedStorages(provider: RecommendedProvider): provider is KoofrProvider {
+  return provider.id === 'koofr';
+}