Parse alternative video title

src/parser.nim

@@ -115,6 +115,9 @@ proc parseVideo(js: JsonNode): Video =
     durationMs: js{"duration_millis"}.getInt
   )
 
+  with title, js{"additional_media_info", "title"}:
+    result.title = title.getStr
+
   for v in js{"video_info", "variants"}:
     result.variants.add VideoVariant(
       videoType: parseEnum[VideoType](v{"content_type"}.getStr("summary")),