base-files: add shell timeout

It is a good practice to timeout the shell if no activity. Add a timeout
to the /etc/profile* settings in a separate script.

Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>

meta-ohos-staging/recipes-core/base-files/base-files/profile.d/tmout.sh

+# Shell timeout definition
+
+TMOUT=600
+readonly TMOUT
+export TMOUT

meta-ohos-staging/recipes-core/base-files/base-files_%.bbappend

+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+SRC_URI_append = "file://profile.d/tmout.sh"
 
 do_install_append () {
     sed -i 's/umask.*/umask 027/g' ${D}/${sysconfdir}/profile
+    install -d ${WORKDIR}/profile.d/ ${D}${sysconfdir}/profile.d/
+    install -m 0644 ${WORKDIR}/profile.d/tmout.sh ${D}${sysconfdir}/profile.d/tmout.sh
 }