* Server key API (works for monolith but not for polylith yet)
* Re-enable caching on server key API component
* Groundwork for HTTP APIs for server key API
* Hopefully implement HTTP for server key API
* Simplify public key request marshalling from map keys
* Update gomatrixserverlib
* go mod tidy
* Common -> internal
* remove keyring.go
* Update Docker Hub for server key API
* YAML is funny about indentation
* Wire in new server key API into hybrid monolith mode
* Create maps
* Route server key API endpoints on internal API mux
* Fix server key API URLs
* Add fetcher behaviour into server key API implementation
* Return error if we failed to fetch some keys
* Return results anyway
* Move things about a bit
* Remove unused code
* Fix comments, don't use federation sender URL in polylith mode
* Add server_key_api to sample config
* Review comments
* HTTP API to cache keys that have been requested
* Overwrite server_key_api listen in monolith hybrid mode
* Add libp2p-go
* Some tweaks, tidying up
(cherry picked from commit 1a5bb121f8121c4f68a27abbf25a9a35a1b7c63e)
* Move p2p dockerfile
(cherry picked from commit 8d3bf44ea1bf37f950034e73bcdc315afdabe79a)
* Remove containsBackwardsExtremity
* Fix some linter errors, update some libp2p packages/calls, other tidying up
* Add -port for dendrite-p2p-demo
* Use instance name as key ID
* Remove P2P demo docker stuff, no longer needed now that we have SQLite
* Remove Dockerfile-p2p too
* Remove p2p logic from dendrite-monolith-server
* Inject publicRoomsDB in publicroomsapi
Inject publicRoomsDB instead of switching on base.libP2P.
See: https://github.com/matrix-org/dendrite/pull/956/files?file-filters%5B%5D=.go#r406276914
* Fix lint warning
* Extract mDNSListener from base.go
* Extract CreateFederationClient into demo
* Create P2PDendrite from BaseDendrite
Extract logic specific to P2PDendrite from base.go
* Set base.go to upstream/master
* Move pubsub to demo cmd
* Move PostgreswithDHT to cmd
* Remove unstable features
* Add copyrights
* Move libp2pvalidator into p2pdendrite
* Rename dendrite-p2p-demo -> dendrite-demo-libp2p
* Update copyrights
* go mod tidy
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>