Support more migration directions

[nclm]

It would be great for OpenPortability to support finding contacts in several directions, and not just X to Mastodon/Bluesky.

For instance to find my Bluesky contacts on Mastodon. Or the reverse direction.
(it could even support towards X, even though that’s not the goal)

If OpenPortability eventually supports other networks (for instance see #68 #70 #76 #80), it could become a hub to migrate from any network towards any network (almost, depending on APIs I guess).

[cclambie]

I was just thinking about this too.
I would love to see a list of people I know from all the socials that have APIs.
Then invite to Bsky/ Mastodon buttons for those on Oligarch controlled servers.

eg.
Name | Bsky | Mastodon | Fediverse Server x | Fediverse Server y | Facebook | Instagram | Twitter/X | Youtube | Snap Chat | Tik Tok
Friend 1 | | f1.server | x | | x | x | x | | |
Friend 2 | fd2 | | | x | | x | | x | |
Friend 3 | | fd3 | x | | x | | x | | |
Friend 4 | fd4 | | fd4 | | | | | | |
Friend 5 | | | | | x | x | | | |
Friend 6 | | | | | | x | x | | |
etc

Then you could either visit their profile by clicking the appropriate checkmark, or even send a "hey I am on xx server now, come" DM to them.
OR just open the DM platform and have a message on clipboard ready to paste.
(obv that would require some preferences on which Fediverse server you wanted to promote)

Just a thought