Proxmox Backup Server Renaming and Update fix (#2012)

* Remaned PBS to long name Proxmox Backup Server and fixed install check

* Fix Name

install/proxmox-backup-server-install.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2021-2025 tteck
+# Author: tteck (tteckster)
+# License: MIT
+# https://github.com/community-scripts/ProxmoxVE/raw/main/LICENSE
+
+source /dev/stdin <<< "$FUNCTIONS_FILE_PATH"
+color
+verb_ip6
+catch_errors
+setting_up_container
+network_check
+update_os
+
+msg_info "Installing Dependencies"
+$STD apt-get install -y \
+    curl \
+    sudo \
+    gpg \
+    mc 
+msg_ok "Installed Dependencies"
+
+msg_info "Installing Proxmox Backup Server"
+wget -q https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
+cat <<EOF >>/etc/apt/sources.list
+deb http://download.proxmox.com/debian/pbs bookworm pbs-no-subscription
+EOF
+$STD apt-get update
+$STD apt-get install -y proxmox-backup-server
+msg_ok "Installed Proxmox Backup Server"
+
+motd_ssh
+customize
+
+msg_info "Cleaning up"
+$STD apt-get -y autoremove
+$STD apt-get -y autoclean
+msg_ok "Cleaned"