Integrate emerg-shutdown into the initramfs

usr/lib/dracut/modules.d/99emerg-shutdown/module-setup.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+## Copyright (C) 2025 - 2025 ENCRYPTED SUPPORT LLC <adrelanos@whonix.org>
+## See the file COPYING for copying conditions.
+
+## called by dracut
+check() {
+  require_binaries /run/emerg-shutdown || return 1
+  return 255
+}
+
+## called by dracut
+depends() {
+  echo 'systemd bash'
+  return 0
+}
+
+## called by dracut
+install() {
+  local config_file
+
+  inst systemd-notify
+
+  inst_simple /usr/libexec/security-misc/emerg-shutdown
+  inst_simple /usr/share/security-misc/emerg-shutdown-initramfs.service /usr/lib/systemd/system/emerg-shutdown-initramfs.service
+  inst_simple /run/emerg-shutdown /emerg-shutdown
+
+  for config_file in /etc/security-misc/emerg-shutdown/*.conf; do
+    if [ -f "${config_file}" ]; then
+      inst_multiple /etc/security-misc/emerg-shutdown/*.conf
+      break
+    fi
+  done
+  for config_file in /usr/local/etc/security-misc/emerg-shutdown/*.conf; do
+    if [ -f "${config_file}" ]; then
+      inst_multiple /usr/local/etc/security-misc/emerg-shutdown/*.conf
+      break
+    fi
+  done
+
+  mkdir -p "${initdir}/usr/lib/systemd/system/initrd.target.wants"
+  ln -s '../emerg-shutdown-initramfs.service' "${initdir}/usr/lib/systemd/system/initrd.target.wants/emerg-shutdown-initramfs.service"
+}
+
+## called by dracut
+installkernel () {
+  hostonly='' instmods evdev
+}