[performance] update remaining worker pools to use queues (#2865)

* start replacing client + federator + media workers with new worker + queue types

* refactor federatingDB.Delete(), drop queued messages when deleting account / status

* move all queue purging to the processor workers

* undo toolchain updates

* code comments, ensure dereferencer worker pool gets started

* update gruf libraries in readme

* start the job scheduler separately to the worker pools

* reshuffle ordering or server.go + remove duplicate worker start / stop

* update go-list version

* fix vendoring

* move queue invalidation to before wipeing / deletion, to ensure queued work not dropped

* add logging to worker processing functions in testrig, don't start workers in unexpected places

* update go-structr to add (+then rely on) QueueCtx{} type

* ensure more worker pools get started properly in tests

* fix remaining broken tests relying on worker queue logic

* fix account test suite queue popping logic, ensure noop workers do not pull from queue

* move back accidentally shuffled account deletion order

* ensure error (non nil!!) gets passed in refactored federatingDB{}.Delete()

* silently drop deletes from accounts not permitted to

* don't warn log on forwarded deletes

* make if else clauses easier to parse

* use getFederatorMsg()

* improved code comment

* improved code comment re: requesting account delete checks

* remove boolean result from worker start / stop since false = already running or already stopped

* remove optional passed-in http.client

* remove worker starting from the admin CLI commands (we don't need to handle side-effects)

* update prune cli to start scheduler but not all of the workers

* fix rebase issues

* remove redundant return statements

* i'm sorry sir linter

internal/media/processingmedia.go

@@ -27,7 +27,7 @@ import (
 
 	errorsv2 "codeberg.org/gruf/go-errors/v2"
 	"codeberg.org/gruf/go-runners"
-	"codeberg.org/superseriousbusiness/exif-terminator"
+	terminator "codeberg.org/superseriousbusiness/exif-terminator"
 	"github.com/disintegration/imaging"
 	"github.com/h2non/filetype"
 	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
@@ -82,7 +82,7 @@ func (p *ProcessingMedia) LoadAttachment(ctx context.Context) (*gtsmodel.MediaAt
 		// asynchronous processing, which will
 		// use a background context.
 		log.Warnf(ctx, "reprocessing media %s after canceled ctx", p.media.ID)
-		go p.mgr.state.Workers.Media.Enqueue(p.Process)
+		p.mgr.state.Workers.Media.Queue.Push(p.Process)
 	}
 
 	// Media could not be retrieved FULLY,