Add Cassandra script (#2367)

---------

Co-authored-by: @madhur

ct/cassandra.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+source <(curl -s https://raw.githubusercontent.com/tteck/Proxmox/main/misc/build.func)
+# Copyright (c) 2021-2024 tteck
+# Author: tteck (tteckster)
+# License: MIT
+# https://github.com/tteck/Proxmox/raw/main/LICENSE
+
+function header_info {
+clear
+cat <<"EOF"
+   ______                                __          
+  / ____/___ _______________ _____  ____/ /________ _
+ / /   / __ `/ ___/ ___/ __ `/ __ \/ __  / ___/ __ `/
+/ /___/ /_/ (__  |__  ) /_/ / / / / /_/ / /  / /_/ / 
+\____/\__,_/____/____/\__,_/_/ /_/\__,_/_/   \__,_/  
+EOF
+}
+header_info
+echo -e "Loading..."
+APP="Cassandra"
+var_disk="4"
+var_cpu="1"
+var_ram="2048"
+var_os="debian"
+var_version="12"
+VERBOSE="yes"
+variables
+color
+catch_errors
+
+function default_settings() {
+  CT_TYPE="1"
+  PW=""
+  CT_ID=$NEXTID
+  HN=$NSAPP
+  DISK_SIZE="$var_disk"
+  CORE_COUNT="$var_cpu"
+  RAM_SIZE="$var_ram"
+  BRG="vmbr0"
+  NET="dhcp"
+  GATE=""
+  APT_CACHER=""
+  APT_CACHER_IP=""
+  DISABLEIP6="no"
+  MTU=""
+  SD=""
+  NS=""
+  MAC=""
+  VLAN=""
+  SSH="no"
+  VERB="no"
+  echo_default
+}
+
+function update_script() {
+header_info
+if [[ ! -f /etc/systemd/system/cassandra.service ]]; then msg_error "No ${APP} Installation Found!"; exit; fi
+msg_error "There is currently no update path available."
+exit
+}
+
+start
+build_container
+description
+
+msg_ok "Completed Successfully!\n"