Add q23::expected as a private typeHEADdev

This patch adds a std::expected-like type in Qt for use in the Qt
implementation. It is using Sy Brand's tl::expected which is similar to
std::expected, and works with C++17. Although it closely resembles
std::expected, it is not identical and is therefor added as a private
header. The new type is intended to be accessible to all Qt modules and
is therefore made available through Qt Core. It is, however, not
intended for use in public APIs.

[ChangeLog][Third-Party Code] Added Sy Brand's tl::expected as a third
party dependency for use internally in Qt implementation.

Change-Id: I09930f31bf97498643d62814c688f288d5c33265
Reviewed-by: Tim Blechmann <[email protected]>

0 files changed, 0 insertions, 0 deletions