repo: update version matrix in read-me file

misc: add more invalid episode titles

feat: add setting to only show animation studios

misc: add roman letter fallback for movie series if no subtitle is av…

…ailable

fix: ignore more episode names

chore: simplify special prefix logic

fix: suppress ignored episode titles

fix: add guard for shared side stories

Added a guard to prevent accidentally duplicating a series across multiple merge groups because the series is a side story to multiple main stories (e.g. linked to two series which have a sequel/prequel relationship, etc.).

fix: more systematic ordering of relations during merging

misc: allow syncing vfs thread count to refresh thread count

Allow synchronizing the number of threads to use during a VFS (re-)generation to the number of threads to use during a recursive refresh of a folder (any folder, by it the library itself, a series within, etc.) defined in the jellyfin core system settings by setting the VFS threads setting to `-1`. Setting it to `0` or anything below `-1` will still set it to use the number of available CPU cores, but `-1` is now reserved for following the system setting.