* Perform outbound federation hits for querying/claiming E2E keys
Untested currently because we need the receiving end to work
before sytest will be happy.
* Linting
* Deduplicate FS database, add some EDU persistence groundwork
* Extend TransactionWriter to use optional existing transaction, use that for FS SQLite database writes
* Fix build due to bad keyserver import
* Working EDU persistence
* gocyclo, unsurprisingly
* Remove unused
* Update copyright notices
* Add storage layer for postgres/sqlite
* Return OTK counts when inserting new keys
* Hook up the key DB and make a test pass
* Convert postgres queries to be sqlite queries
* Blacklist test due to requiring rejected events
* Unbreak tests
* Update blacklist
* Join room body is optional
* Support deprecated login by user/password
* Implement dummy key upload endpoint
* Make a very determinate end to /messages if we hit the create event in back-pagination
* Linting
* Make userapi responsible for checking access tokens
There's still plenty of dependencies on account/device DBs, but this
is a start. This is a breaking change as it adds a required config
value `listen.user_api`.
* Cleanup
* Review comments and test fix
* Split out adding HTTP routes from making internal APIs for clarity
* Split out more components
* Split out more things
* Finish converting
* internal mux for internal routes
* Separate muxes for public and internal APIs
* Update client-api-proxy and federation-api-proxy so they don't add /api to the path
* Tidy up
* Consistent HTTP setup
* Set up prefixes properly
