"Date locale"

[bpaldan]

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On the "User/Settings" we can set the Date locale. Cay you add a new locale ex. in Hungarian (or ISO 8601 format)? The ISO representation for July 15, 2022 is either 20220715 or 2022-07-15, same as Hungarian (YYYY. MM. DD).
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New Date local, in 12h and/or (preferably) 24h, in YYYY-MM-DD or in YYYY. MM. DD format.

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Thank you your great effort to make this app.

[jmattheis]

I'm open to accept PRs for this addition.