implement a variant of #282

we probably should add a note regaring backwards compatibility (resonate -> `resonaterecordings.com`, relayfm -> `relay.fm`) and decentralised identifiers like `bitcoin`, `mastodon`,

serviceslugs.txt

@@ -1,51 +1,51 @@
-acast
-amazon
-anchor
-apple
-audioboom
-backtracks
+acast.com
+amazon.com
+anchor.fm
+apple.com
+audioboom.com
+backtracks.fm
 bitcoin
-blubrry
-buzzsprout
-captivate
-castos
-fireside
-fyyd
-google
-hypercatcher
-libsyn
+blubrry.com
+buzzsprout.com
+captivate.com
+castos.com
+fireside.fm
+fyyd.de
+google.com
+hypercatcher.com
+libsyn.com
 mastodon
-megafono
-megaphone
-omnystudio
-overcast
-paypal
-pinecast
-podbean
-podcastaddict
-podcastguru
-podcastindex
+megafono.host
+megaphone.fm
+omnystudio.com
+overcast.fm
+paypal.com
+pinecast.com
+podbean.com
+podcastaddict.com
+podcastguru.io
+podcastindex.org
 podcasts.com
-podchaser
-podcloud
-podfriend
-podiant
-podigee
-podnews
-podomatic
-podserve
-podverse
-redcircle
-relayfm
-resonate
+podchaser.com
+podcloud.fr
+podfriend.com
+podiant.co
+podigee.com
+podnews.com
+podomatic.com
+podserve.fm
+podverse.fm
+redcircle.com
+relay.fm
+resonaterecordings.com
 rss.com
-shoutengine
-simplecast
-slack
-soundcloud
-spotify
-spreaker
-transistor
-twitter
-whooshkaa
-zencast
+shoutengine.com
+simplecast.com
+slack.com
+soundcloud.com
+spotify.com
+spreaker.fm
+transistor.fm
+twitter.com
+whooshkaa.com
+zencast.com