* improved server shutdown with more precise shutdown of modules + deferring of ALL of it
* move delivery and workers into separate files
* add worker task model and Serialize() / Deserialize() methods for message types
* start adding message serialize / deserialize tests
* start adding test cases
* update body rewinding to rely on standard library mechanism of r.GetBody()
* remove request rewinding (http.Client{} should already handle this)
* standard library already handles rewinding
* improved code comment
* move the newPOST() function contents to prepare(), fits better with current API
* add Serialize() / Deserialize() implementations for Delivery{} type
* finish writing FromClientAPI sserialize / deserialize tests
* start adding FromFediAPI{} serialize / deserialize test cases
* fix FromFediAPI{} tests
* add tests for delivery message type
* fix repeat code
* missing license header
* use testrig status and accounts for marshal / unmarshaling tests
* add a specific test for checking account RSA keys are preserved
* 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
* add delivery worker type that pulls from queue to httpclient package
* finish up some code commenting, bodge a vendored activity library change, integrate the deliverypool changes into transportcontroller
* hook up queue deletion logic
* support deleting queued http requests by target ID
* don't index APRequest by hostname in the queue
* use gorun
* use the original context's values when wrapping msg type as delivery{}
* actually log in the AP delivery worker ...
* add uncommitted changes
* use errors.AsV2()
* use errorsv2.AsV2()
* finish adding some code comments, add bad host handling to delivery workers
* slightly tweak deliveryworkerpool API, use advanced sender multiplier
* remove PopCtx() method, let others instead rely on Wait()
* shuffle things around to move delivery stuff into transport/ subpkg
* remove dead code
* formatting
* validate request before queueing for delivery
* finish adding code comments, fix up backoff code
* finish adding more code comments
* clamp minimum no. senders to 1
* add start/stop logging to delivery worker, some slight changes
* remove double logging
* use worker ptrs
* expose the embedded log fields in httpclient.Request{}
* ensure request context values are preserved when updating ctx
* add delivery worker tests
* fix linter issues
* ensure delivery worker gets inited in testrig
* fix tests to delivering messages to check worker delivery queue
* update error type to use ptr instead of value receiver
* fix test calling Workers{}.Start() instead of testrig.StartWorkers()
* update docs for advanced-sender-multiplier
* update to the latest activity library version
* add comment about not using httptest.Server{}
