feat: add GIO_LAUNCHED_DESKTOP_FILE to runtime envs

add hooks for dde-dock

Signed-off-by: ComixHe <heyuming@deepin.org>

misc/hooks.d/1-dockEnv.json.in

@@ -0,0 +1,4 @@
+{
+    "Exec": "@CMAKE_INSTALL_PREFIX@/@AM_LIBEXEC_DIR@/dockEnv.sh",
+    "Args":[]
+}

misc/hooks.d/dockEnv.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+# This hook is required by dde-dock that detect identity of Application.
+# May be remove on later.
+
+export GIO_LAUNCHED_DESKTOP_FILE_PID=$$
+exec "$@"