feat: basic caldav support (#14372)

fix #13531 

#### PR Dependency Tree


* **PR #14372** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* CalDAV calendar integration: link and sync CalDAV-compatible calendars
(discovery, listing, event sync).
* New UI flow and dialog to link CalDAV accounts with provider
selection, credentials, and display name.

* **API / Config**
* Server exposes CalDAV provider presets in config and new GraphQL
mutation to link CalDAV accounts.
  * New calendar config section for CalDAV with validation and defaults.

* **Tests**
  * Comprehensive CalDAV integration test suite added.

* **Chores**
* Removed analytics tokens from build configuration and reduced Cloud
E2E test shards.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/components/hooks/use-query.ts

@@ -12,6 +12,15 @@ import useSWR from 'swr';
 import useSWRImmutable from 'swr/immutable';
 import useSWRInfinite from 'swr/infinite';
 
+export type UseQueryConfig<Query extends GraphQLQuery = GraphQLQuery> = Omit<
+  SWRConfiguration<
+    QueryResponse<Query>,
+    GraphQLError,
+    (options: QueryOptions<Query>) => Promise<QueryResponse<Query>>
+  >,
+  'fetcher'
+>;
+
 /**
  * A `useSWR` wrapper for sending graphql queries
  *
@@ -32,14 +41,7 @@ import useSWRInfinite from 'swr/infinite';
  */
 type useQueryFn = <Query extends GraphQLQuery>(
   options?: QueryOptions<Query>,
-  config?: Omit<
-    SWRConfiguration<
-      QueryResponse<Query>,
-      GraphQLError,
-      (options: QueryOptions<Query>) => Promise<QueryResponse<Query>>
-    >,
-    'fetcher'
-  >
+  config?: UseQueryConfig<Query>
 ) => SWRResponse<
   QueryResponse<Query>,
   GraphQLError,