[investigation] better fedi-wide support for local-only / follower-only posts

[igalic]

I was gonna open up an issue on Tusky about local-only posting, but there seems to be a bit of a discrepancy going on, that i wasn't aware of: Namely, figuring out whether the server a mobile client is talking to supports local-only (and followers-only) posts

• https://github.com/tuskyapp/Tusky/issues/835
• https://github.com/glitch-soc/mastodon/pull/1438
• https://github.com/hometown-fork/hometown/issues/23

we should participate in whatever consensus building there needs to be happening to get this advertisement standardized.

[tsmethurst]

Thanks for opening this! Good one.

[rscmbbng]

Hi both, I'm not a gotosocial user but I'd be keen on helping out with better support for local-only across fediverse clients!

[igalic]

ref #345