Add function fromDaysSinceYearZero()

[jh0x]

Closes #55308

Changelog category (leave one):

• New Feature

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Added function fromDaysSinceYearZero() which is similar to MySQL's FROM_DAYS. E.g. SELECT fromDaysSinceYearZero(739136) returns 2023-09-08.

[robot-clickhouse]

This is an automated comment for commit a43647b with description of existing statuses. It's updated for the latest CI running

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[rschu1ze]

@jh0x Thanks a lot for this contribution. I took the freedom to make some adjustments (please see my individual commits). The main change is this: 0b587d3 But this is totally not to diminish your effort, you'll be mentioned in the changelog!