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Improve book library page query performance for author sort order (#4080)

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* Add migration to create authorNames* columns, in libraryItems including update triggers and indices

* Add authorNames columns and indices to LibraryItem model

* Add database triggers for updating author names in libraryItems (for new databases)

* Populate authorNames during book scanning

* Update book sorting to use new authorNames columns

* Add an index on podcastEpisodes.publishedAt

* Fix group_concat order by and update to sqlite 3.44.2

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Co-authored-by: advplyr <advplyr@protonmail.com>
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server/migrations/changelog.md
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@ -15,3 +15,4 @@ Please add a record of every database migration that you create to this file. Th
| v2.17.7 | v2.17.7-add-indices | Adds indices to the libraryItems and books tables to reduce query times |
| v2.19.1 | v2.19.1-copy-title-to-library-items | Copies title and titleIgnorePrefix to the libraryItems table, creates update triggers and indices |
| v2.19.4 | v2.19.4-improve-podcast-queries | Adds numEpisodes to podcasts, adds podcastId to mediaProgresses, copies podcast title to libraryItems |
| v2.20.0 | v2.20.0-improve-author-sort-queries | Adds AuthorNames(FirstLast\|LastFirst) to libraryItems to improve author sort queries |