Finnish translations (#732)

* feat: begin work on Finnish translations

* feat: translate account section to Finnish

* feat: translate editor.search section

* feat: translate editor.spellcheck section to Finnish

* feat: partially translate appearance section to Finnish

* feat: translate several sections to Finnish

* fix: fix a translation and a typo

* add initial noun translations

* translate: add canvas translations

* translate: add note-composer translations

* Liitännäinen -> lisäosa

* Päivittää plugins/file-recovery osan

* Editor kappale päivitetty

* feat: translate file section to Finnish

* feat: translate dialogue section to Finnish

* feat: translate a few small sections to Finnish

* fix: fix typo

* feat: add more Finnish translations

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Co-authored-by: Eldemarkki <38920928+Eldemarkki@users.noreply.github.com>
Co-authored-by: Pauli Sarkia <25932053+Pasark@users.noreply.github.com>