feat: add debian12 scripts

- sudo_re_authenticate.sh 	-> 5.2.5
- pam_pwhistory_enabled.sh 	-> 5.3.2.4
- pam_faillock_enabled.sh	-> 5.3.2.2
This is an updated version of enable_lockout_failed_password.sh (renamed)

- pam_unix_enabled.sh  		-> 5.3.2.1
- password_failed_lockout.sh 	-> 5.3.3.1.1
- password_unlock_time.sh 	-> 5.3.3.1.2
- password_root_unlock.sh 	-> 5.3.3.1.3

bin/hardening/pam_unix_enabled.sh

@@ -0,0 +1,72 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# Ensure pam_unix module is enabled (Automated)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+# shellcheck disable=2034
+HARDENING_LEVEL=3
+# shellcheck disable=2034
+DESCRIPTION="Ensure pam_unix module is enabled"
+
+PAM_FILES="/etc/pam.d/common-auth /etc/pam.d/common-account /etc/pam.d/common-session /etc/pam.d/common-password"
+PAM_PATTERN="^[^#].*pam_unix.so"
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    PAM_VALID=0
+
+    for PAM_FILE in $PAM_FILES; do
+        if grep "$PAM_PATTERN" "$PAM_FILE" >/dev/null 2>&1; then
+            info "pam_unix found in $PAM_FILE"
+        else
+            crit "pam_unix not found in $PAM_FILE"
+            PAM_VALID=1
+        fi
+    done
+
+    if [ "$PAM_VALID" -eq 0 ]; then
+        ok "pam_unix is enabled"
+    fi
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+    if [ "$PAM_VALID" -ne 0 ]; then
+        info "Applying 'pam-auth-update' to enable pam_unix.so"
+        DEBIAN_FRONTEND='noninteractive' pam-auth-update --force --enable unix
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_LIB_DIR" ]; then
+    echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+    echo "Cannot source CIS_LIB_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
+    # shellcheck source=../../lib/main.sh
+    . "${CIS_LIB_DIR}"/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
+    exit 128
+fi