Updated the commercial SPDX-License-Identifier to
the source files (including tools and utils). Examples,
tests, documentation, or build files are not updated.
Modified licenseRule.json and REUSE.toml accordingly.
Task-number: QTBUG-136484
Change-Id: I4b82a867e37cb90a9d94db60a9c5715dd0557562
Reviewed-by: Kai Köhne <kai.koehne@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>