* Initial federation sender -> federation API refactoring
* Move base into own package, avoids import cycle
* Fix build errors
* Fix tests
* Add signing key server tables
* Try to fold signing key server into federation API
* Fix dendritejs builds
* Update embedded interfaces
* Fix panic, fix lint error
* Update configs, docker
* Rename some things
* Reuse same keyring on the implementing side
* Fix federation tests, `NewBaseDendrite` can accept freeform options
* Fix build
* Update create_db, configs
* Name tables back
* Don't rename federationsender consumer for now
Now that MSC1772 passed FCP its identifiers have stabilised
This outright drops support for experimental spaces but that's what you get for being on the bleeding edge
* Add fedsender dep on msc2946
* Add MSC2946Spaces to fsAPI
* Add exclude_rooms impl
* Implement fed spaces handler
* Use stripped state not room version
* Call federated spaces at the right time
* Add stub functions for MSC2946
* Implement core space walking algorithm
* Flesh out stub functions; add test stubs
* Implement storage bits and add sanity check test
* Implement world_readable auth with test
* Linting