feat(core): Add onlySharedWithMe filter to GET /credentials endpoint (no-changelog) (#14885)

Co-authored-by: Danny Martini <danny@n8n.io>

packages/@n8n/api-types/src/dto/credentials/credentials-get-many-request.dto.ts

@@ -19,4 +19,6 @@ export class CredentialsGetManyRequestQuery extends Z.class({
 	 * This switches `includeScopes` to true to be able to check for the scopes
 	 */
 	includeData: booleanFromString.optional(),
+
+	onlySharedWithMe: booleanFromString.optional(),
 }) {}