rss_services.md

services	support subscribe	support create/delete tag	support star	support fetch by feed
feedly	✅	✅	✅	✅
gr api (inoreader / bazqux / the old reader / freshrss)	✅	✅	✅	✅
feedbin	✅	✅	✅	❌
tiny tiny rss	✅	❌	✅	✅
fever api	❌	✅	✅	❌