Add a few keywords to increase the reachability

ArtyomVancyan · ArtyomVancyan · commit 6ed53c644983 · 2023-04-18T20:07:15.000+04:00
diff --git a/setup.cfg b/setup.cfg
@@ -10,6 +10,8 @@ url = https://github.com/pysnippet/thumbnails
 keywords =
     vtt
     json
+    thumbnail
+    generator
     thumbnails
     thumbnail-generator
 license = Apache 2.0
