Update watchlist for activitypub apps - added Scuttlebutt

watchlist-for-activitypub-apps.md

@@ -38,6 +38,8 @@
 
 * :heavy_check_mark: [Rustodon](https://github.com/rustodon/rustodon)
 
+* :black_nib: [Scuttlebutt](https://github.com/DanielMowitz/ssb_ap_bridge) - currently working on a bridge between SSB and AP networks
+
 * :heavy_check_mark: [SocialHome](https://git.feneas.org/socialhome/socialhome/issues/522) - currently working on adding AP support to their [Python federation library](https://git.feneas.org/jaywink/federation/issues/7)
 
 * :heavy_check_mark: [Kibou](https://git.cybre.club/kibouproject/kibou) - highly customizable multi-protocol social networking server