openapi: Add dataclass for holding article path fields.

The returned values of get_path function would be
expanded soon, and defining a dataclass would make
the code cleaner for returning and using the fields.

zerver/views/documentation.py

@@ -2,7 +2,8 @@ import os
 import random
 import re
 from collections import OrderedDict
-from typing import Any, Dict, Tuple
+from dataclasses import dataclass
+from typing import Any, Dict, Optional, Tuple
 
 from django.conf import settings
 from django.http import HttpRequest, HttpResponse, HttpResponseNotFound
@@ -19,6 +20,14 @@ from zerver.models import Realm
 from zerver.openapi.openapi import get_endpoint_from_operationid, get_openapi_summary
 
 
+@dataclass
+class DocumentationArticle:
+    article_path: str
+    article_http_status: int
+    endpoint_path: Optional[str]
+    endpoint_method: Optional[str]
+
+
 def add_api_uri_context(context: Dict[str, Any], request: HttpRequest) -> None:
     context.update(zulip_default_context(request))