* initial work replacing our media decoding / encoding pipeline with ffprobe + ffmpeg
* specify the video codec to use when generating static image from emoji
* update go-storage library (fixes incompatibility after updating go-iotools)
* maintain image aspect ratio when generating a thumbnail for it
* update readme to show go-ffmpreg
* fix a bunch of media tests, move filesize checking to callers of media manager for more flexibility
* remove extra debug from error message
* fix up incorrect function signatures
* update PutFile to just use regular file copy, as changes are file is on separate partition
* fix remaining tests, remove some unneeded tests now we're working with ffmpeg/ffprobe
* update more tests, add more code comments
* add utilities to generate processed emoji / media outputs
* fix remaining tests
* add test for opus media file, add license header to utility cmds
* limit the number of concurrently available ffmpeg / ffprobe instances
* reduce number of instances
* further reduce number of instances
* fix envparsing test with configuration variables
* update docs and configuration with new media-{local,remote}-max-size variables
* start updating media manager interface ready for storing attachments / emoji right away
* store emoji and media as uncached immediately, then (re-)cache on Processing{}.Load()
* remove now unused media workers
* fix tests and issues
* fix another test!
* fix emoji activitypub uri setting behaviour, fix remainder of test compilation issues
* fix more tests
* fix (most of) remaining tests, add debouncing to repeatedly failing media / emojis
* whoops, rebase issue
* remove kim's whacky experiments
* do some reshuffling, ensure emoji uri gets set
* ensure marked as not cached on cleanup
* tweaks to media / emoji processing to handle context canceled better
* ensure newly fetched emojis actually get set in returned slice
* use different varnames to be a bit more obvious
* move emoji refresh rate limiting to dereferencer
* add exported dereferencer functions for remote media, use these for recaching in processor
* add check for nil attachment in updateAttachment()
* remove unused emoji and media fields + columns
* see previous commit
* fix old migrations expecting image_updated_at to exists (from copies of old models)
* remove freshness checking code (seems to be broken...)
* fix error arg causing nil ptr exception
* finish documentating functions with comments, slight tweaks to media / emoji deref error logic
* remove some extra unneeded boolean checking
* finish writing documentation (code comments) for exported media manager methods
* undo changes to migration snapshot gtsmodels, updated failing migration to have its own snapshot
* move doesColumnExist() to util.go in migrations package
* update to use go-storage/ instead of go-store/v2/storage/
* pull in latest version from codeberg
* remove test output 😇
* add code comments
* set the exclusive bit when creating new files in disk config
* bump to actual release version
* bump to v0.1.1 (tis a simple no-logic change)
* update readme
* only use a temporary read seeker when decoding video if required (should only be S3 now)
* use fastcopy library to use memory pooled buffers when calling TempFileSeeker()
* update to use seek call in serveFileRange()
* [bugfix] process account delete side effects in serial, not in parallel
* StartWorkers / StartNoopWorkers for tests
* undo testrig trace logging
* log errors instead of immediately returning
* update typeconverter to use state structure
* deinterface the typeutils.TypeConverter -> typeutils.Converter
* finish copying over old type converter code comments
* fix cherry-pick merge issues, fix tests pointing to old typeutils interface type still
