Update SearchMessagesArguments to support cursor pagination

Author: vegeris

packages/web-api/src/types/request/search.ts

@@ -12,9 +12,19 @@ interface Searchable extends OptionalTeamAssignable, SortDir {
   sort?: 'score' | 'timestamp';
 }
 
+interface SearchMessagesCursorPagination {
+  /**
+  * @description Paginate through collections of data by setting the `cursor` parameter to `*` for the first "page"
+  * or a `next_cursor` attribute returned by a previous request's `response_metadata`. 
+  * Use the `count` parameter to set the number of items to return per page rather than `limit`.
+  * @see {@link https://docs.slack.dev/apis/web-api/pagination pagination} for more detail.
+  */
+  cursor?: string;
+}
+
 // https://docs.slack.dev/reference/methods/search.all
 export interface SearchAllArguments extends TokenOverridable, TraditionalPagingEnabled, Searchable {}
 // https://docs.slack.dev/reference/methods/search.files
 export interface SearchFilesArguments extends TokenOverridable, TraditionalPagingEnabled, Searchable {}
 // https://docs.slack.dev/reference/methods/search.messages
-export interface SearchMessagesArguments extends TokenOverridable, TraditionalPagingEnabled, Searchable {}
+export interface SearchMessagesArguments extends TokenOverridable, TraditionalPagingEnabled, Searchable, SearchMessagesCursorPagination {}