chore: configure current repository as a version

And use it as default version.

To this end, the scripts in bin/hardening have been made generic by removing the associated recommendation number.
Only impact is if you are used to execute scripts directly from bin/hardening.
In this case, please use the "bin/hardening.sh" wrapper as intended.

I had to rename 2.3.1_disable_nis.sh to uninstall_nis.sh, as it was conflicting with 2.3.1_disable_nis.sh

Also, there was a doublon between 1.1.1.8_disable_cramfs.sh and 99.1.1.1_disable_cramfs.sh ; the former was kept

bin/hardening/99.1.1.1_disable_cramfs.sh

@@ -1,68 +0,0 @@
-#!/bin/bash
-
-# run-shellcheck
-#
-# CIS Debian Hardening Bonus Check
-#
-
-#
-# 99.1.1.1 Ensure mounting of cramfs filesystems is disabled (Not Scored)
-#
-
-set -e # One error, it's over
-set -u # One variable unset, it's over
-
-# shellcheck disable=2034
-HARDENING_LEVEL=2
-# shellcheck disable=2034
-DESCRIPTION="Disable mounting of cramfs filesystems."
-
-KERNEL_OPTION="CONFIG_CRAMFS"
-MODULE_NAME="cramfs"
-
-# This function will be called if the script status is on enabled / audit mode
-audit() {
-    is_kernel_option_enabled "$KERNEL_OPTION" "$MODULE_NAME"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        crit "$KERNEL_OPTION is enabled!"
-    else
-        ok "$KERNEL_OPTION is disabled"
-    fi
-    :
-}
-
-# This function will be called if the script status is on enabled mode
-apply() {
-    is_kernel_option_enabled "$KERNEL_OPTION"
-    if [ "$FNRET" = 0 ]; then # 0 means true in bash, so it IS activated
-        warn "I cannot fix $KERNEL_OPTION enabled, recompile your kernel please"
-    else
-        ok "$KERNEL_OPTION is disabled, nothing to do"
-    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