Add rspamd install script

rspamd_install.sh

@@ -0,0 +1,16 @@
+#! /bin/sh
+
+
+if [ "$(whoami)" != "root" ]; then
+    SUDO=sudo
+fi
+CODENAME=`lsb_release -c -s`
+
+${SUDO} apt update
+${SUDO} apt-get install -y lsb-release wget gpg
+${SUDO} mkdir -p /etc/apt/keyrings
+wget -O- https://rspamd.com/apt-stable/gpg.key | gpg --dearmor | ${SUDO} tee /etc/apt/keyrings/rspamd.gpg > /dev/null
+echo "deb [signed-by=/etc/apt/keyrings/rspamd.gpg] http://rspamd.com/apt-stable/ $CODENAME main" | ${SUDO} tee /etc/apt/sources.list.d/rspamd.list
+echo "deb-src [signed-by=/etc/apt/keyrings/rspamd.gpg] http://rspamd.com/apt-stable/ $CODENAME main"  | ${SUDO} tee -a /etc/apt/sources.list.d/rspamd.list
+${SUDO} apt-get update
+${SUDO} apt-get --no-install-recommends install rspamd