feat(netbird): add NetBird installation and update scripts with configuration details

install/netbird-install.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2026 community-scripts ORG
+# Author: MickLesk (CanbiZ)
+# License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE
+# Source: https://netbird.io
+
+source /dev/stdin <<<"$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing NetBird Client"
+curl -sSL https://pkgs.netbird.io/debian/public.key | gpg --dearmor --output /usr/share/keyrings/netbird-archive-keyring.gpg
+echo 'deb [signed-by=/usr/share/keyrings/netbird-archive-keyring.gpg] https://pkgs.netbird.io/debian stable main' >/etc/apt/sources.list.d/netbird.list
+$STD apt update
+$STD apt install -y netbird
+msg_ok "Installed NetBird Client"
+
+msg_info "Enabling Service"
+systemctl enable -q --now netbird
+msg_ok "Enabled Service"
+
+motd_ssh
+customize
+cleanup_lxc