Worker Domain Refactor (#5338)

* feat(server): Refactor LookupWorkerByName to be a test method

* feat(server): Split worker tags table

* refact(worker): Export api and config tags

* refact(server): Return worker id from UpsertWorkerStatus

* refact(server): Create ListWorkerStorageBucketUpdates domain function

* refact(server): Use dedicated HCPb-worker list func

* refact(server): Create ConnectionRoute domain function

* refact(handlers): Move worker selection logic to internal/server package

This commit moves all the logic to select a worker to handle a session
to the internal/server package. Most functions were moved to this
package with no changes, however, there are a couple of notable
exceptions:

- Given that we don't use GRPC errors in repos, all errors were adjusted
  to use the internal/errors package instead.
- StorageBucketFilterCredIdFn is now used to prevent the internal/server
  package from importing internal/storage/plugin, which would cause a
  dep cycle. Callers of SelectSessionWorkers must implement this func
  which is responsible for returning a storage bucket's worker filter as
  well as its associated credential id.
- authorizeSessionWithWorkerFilter now receives an
  internal/server.(*Repository) object when called. This is transparent
  to SelectSessionWorkers callers as it is handled internally.

* feat(server): Add FilteredWithFeatures fn and new server options

* refact(server): create new list and lookup worker queries

* test(server): Add WorkerList unit tests

* feat(server): Implement WorkerList randomness using crypto/rand pkg

* chore(db): add index to server_worker table

* refact(server): prefix test method with Test

* refact(server): rename Downstreamers interface to Graph

* chore(server): unexport and rename method

* chore: add doc string to WorkerAddress (#5420)

---------

Co-authored-by: Irena Rindos <irenarindos@users.noreply.github.com>
Co-authored-by: irenarindos <irena.rindos@gmail.com>

internal/daemon/controller/common/common.go

@@ -46,11 +46,3 @@ type (
 	AliasRepoFactory               func() (*alias.Repository, error)
 	TargetAliasRepoFactory         func() (*target.Repository, error)
 )
-
-// Downstreamers provides at least a minimum interface that must be met by a
-// Controller.downstreamWorkers field which is far better than allowing any (empty
-// interface)
-type Downstreamers interface {
-	// RootId returns the root ID of the downstreamers' graph
-	RootId() string
-}