Add CronMaster addon; remove legacy installers

Replace legacy container/install scripts with a single tools/addon/cronmaster.sh addon. The new script consolidates install, update and uninstall flows, uses community-scripts core functions, fetches prebuilt GitHub releases, sets up Node.js (defaults to v22), creates a systemd service and an update helper (/usr/local/bin/update_cronmaster). Removed ct/cronmaster.sh and install/cronmaster-install.sh to avoid duplication and centralize maintenance.

ct/cronmaster.sh

@@ -1,45 +0,0 @@
-#!/usr/bin/env bash
-source <(curl -fsSL https://git.community-scripts.org/community-scripts/ProxmoxVED/raw/branch/main/misc/build.func)
-# Copyright (c) 2021-2026 community-scripts ORG
-# Author: MickLesk (CanbiZ)
-# License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE
-# Source:
-
-APP="CRONMASTER"
-var_tags="${var_tags:-}"
-var_cpu="${var_cpu:-2}"
-var_ram="${var_ram:-4096}"
-var_disk="${var_disk:-8}"
-var_os="${var_os:-debian}"
-var_version="${var_version:-13}"
-var_unprivileged="${var_unprivileged:-1}"
-#var_fuse="${var_fuse:-no}"
-#var_tun="${var_tun:-no}"
-
-header_info "$APP"
-variables
-color
-catch_errors
-
-function update_script() {
-  header_info
-  check_container_storage
-  check_container_resources
-  if [[ ! -d /opt/cronmaster ]]; then
-    msg_error "No ${APP} Installation Found!"
-    exit
-  fi
-  msg_info "Updating Debian LXC"
-  $STD apt update
-  $STD apt upgrade -y
-  msg_ok "Updated Debian LXC"
-  cleanup_lxc
-  exit
-}
-
-start
-build_container
-description
-
-msg_ok "Completed successfully!"
-msg_custom "🚀" "${GN}" "${APP} setup has been successfully initialized!"