Add "Release Year" column to Dolphin's Details view

Summary:
Adds a "Release Year" column to Dolphin's Details view.

BUG: 384317

Test Plan: Tested in a KDE Neon VM.

Reviewers: aacid, broulik, KDE Applications, Dolphin, alexeymin, emmanuelp

Reviewed By: Dolphin, alexeymin, emmanuelp

Differential Revision: https://phabricator.kde.org/D7776