* add missing license headers
* start adding instance peers get
* rename domainblock.go
* embed domain in domainblock so it can be reused
* update swagger docs
* add test instances to db
* update tests
* add/update instancepeersget
* update domain model
* add getinstancepeers to db
* instance-expose-peers, instance-expose-suspended
* add auth checks for both current filters
* attach endpoint to router
* include public comment
* obfuscate domain if required
* go mod tidy
* update swagger docs
* remove unnecessary comment
* return 'flat' peerlist if no query params provided
