Admin social features (#408)

* ActivityPub admin pages for configuration

* Fix dev build

* Add support for requiring follow approval. Closes https://github.com/owncast/owncast/issues/1208

* Point at admin version of followers endpoint

* Add setting for toggling displaying fediverse engagement in admin. https://github.com/owncast/owncast/issues/1404

* Add instance URL textfield to federation config and disable federation if it is empty

* If instance URL is not https disable federation

* Tweak federation toggle text. Make go live message optional

* Add federation info modal. Closes https://github.com/owncast/owncast/issues/1544

* Add support for blocked federated domains. For https://github.com/owncast/owncast/issues/1209

* Simplify fediverse post input

* Add placeholder Fediverse icon

* Tweak federation logo in admin menu. Closes https://github.com/owncast/owncast/issues/1603

* Add global button for composing a fediverse post.

Closes https://github.com/owncast/owncast/issues/1610

* Federation -> Social

* Add page for listing federated actions. Closes https://github.com/owncast/owncast/issues/1573

* Auto-close social post modal after success

* Make user modal action buttons look nicer

* Center and reduce width and center count column. Closes https://github.com/owncast/owncast/issues/1580

* Update the followers table to be clearer

* Fix exception thrown when passing undefined

* Disable federation settings if feature is disabled

* Update enable social modal. For https://github.com/owncast/owncast/issues/1594

* Fix type props

* Quiet, linter

* Move compose button to the left

* Add tooltip for compose button

* Add NSFW toggle to federation config. Closes https://github.com/owncast/owncast/issues/1628

* Add support for blocking/removing followers. For https://github.com/owncast/owncast/issues/1630

* Allow editing the server url field even when federation is disabled

* Continue to update the copy around the social features

* Use relative path to action images. Fixes https://github.com/owncast/owncast/issues/1646

* Link IRIs and make action verbse present tense

* Update caniuse

web/package-lock.json

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