In addition to internal (self + federated) and global (global external search engine), introduce the
self possibility
Closes#1322
Signed-off-by: Thomas Citharel <tcit@tcit.fr>
We also try to detect the application actor if it's not given by NodeInfo metadata (FEP-2677)
(guessing for Mobilizon, PeerTube & Mastodon).
Closes#1392
Signed-off-by: Thomas Citharel <tcit@tcit.fr>