* Write DID signature verification & tests

* Write failing rsa DID test

* Move over DID tests

* Manually import core changes from ##550

* Niv update

* Remove redundant test

* Parse ASN1 DER RSAPublicKeys

* Adjust test fixture to use new format

* Fix fission-cli type errors

* Get everything compiling

* Fix one remaining type error

* Fix type error

* Revert "Niv update"

This reverts commit 3a11d68.

* Cherry-pick some changes from "Niv update"

* Remove AllowAmbiguousTypes

* Move Test.Prelude to Test.Web.UCAN.Prelude

* Re-add AllowAmbigousTypes for DelegationSemantics

I'm pretty sure I need this? https://github.com/fission-suite/fission/runs/5005311975

* Revert encoding DIDs in new format

The rest of the system needs to understand the new format first!
Still, we can now *consume* the new format in the server/CLI.

* Remove unused orphan

* pdns environment handling

* powerdns client for setting records

* add get/clear and support tls

* pr changes

* add syncDNS task

* review cleanup

* Cleanup style

* Adjust imports (remove unused, cleaner qualifieds)

Co-authored-by: Brooklyn Zelenka <hello@brooklynzelenka.com>

Adds explicit error messages for a few failure cases, and
brings the existing errors in line with each other to share
a consistent tone.

In particular, error messages were added for:
- running `app publish` with an unregistered app
- running `app register` without logging in
- running `whoami` without logging in

* add docker-compose based setup for local dev

- pdns (auth + resolver)
- postgresql

* add ipfs docker container

* doc / config updates

* env.yaml -> server.yaml