OmaPhoto 1.0.0: the Linux port of Compositor

A layered image editor for Linux and Omarchy, ported from Compositor
(github.com/robbietilton/Compositor), whose Swift source is its
specification. It reads and writes Compositor's .comp projects.

Packages for Ubuntu, Fedora and Arch come from the release workflow;
scripts/install/ holds one install script per distribution family,
and flake.nix serves NixOS.

Co-Authored-By: Claude <noreply@anthropic.com>

src/Logging.h

@@ -0,0 +1,6 @@
+#pragma once
+#include <QLoggingCategory>
+
+Q_DECLARE_LOGGING_CATEGORY(lcApp)
+Q_DECLARE_LOGGING_CATEGORY(lcRendering)
+Q_DECLARE_LOGGING_CATEGORY(lcIO)