Fix notifications after db1000n output update (again)

[sadviq99]

After the db1000n update, the output format has been changed again. It is still possible to get the "total" statistic as a JSON line, but that worked 1/3 times for me, so I gave up on that, we can't rely on that.

docker-programm-1  | {"level":"info","ts":1650813556.245873,"caller":"metrics/metrics.go:183","msg":"stats","target":"total","requests_attempted":13536,"requests_sent":1843,"responses_received":1843,"bytes_sent":314844}

An alternative solution was to show the stats for each target, I selected this way. To upgrade, do next:

1. Login to the console
2. Open /root/tg.sh file and some your TG token and chat id somewhere
3. Return back to the console
4. Copy and paste this content to the console, press Enter

   db1000n-setup/tg_notify.sh

   Lines 3 to 26 in 4793297

   	echo "
   	#!/bin/bash
   	set -x
   	TG_TOKEN=\"YOUR TELEGRAM TOKEN\"
   	TG_CHAT_ID=\"YOUR TELEGRAM CHAT ID\"
   	TARGETS=\$(docker compose -f /root/db1000n/examples/docker/static-docker-compose.yml logs --tail=1000 | grep 'stats' | grep 'target.*://.*' | cut -d '|' -f 2 | jq -r '. | \"\(.target) \`(\(.requests_sent)/\(.responses_received), \(.bytes_sent/1000000)MB)\`\"' | sed 's/.*\/\///' | awk -F' ' '!_[\$1]++' | sed -E 's/([0-9]+\.[0-9]{1,2})[^ ]*MB/\1MB/g' | sort -n -r -k3)
   	COUNTRY=\$(docker compose -f /root/db1000n/examples/docker/static-docker-compose.yml logs --no-log-prefix | grep 'country*' | tail -n 1 | jq -r '.country')
   	message=\"*Host*: \\\`\$(hostname)\\\`\"
   	message+=\"%0A\"
   	message+=\"*VPN location*: \\\`\$COUNTRY\\\`\"
   	message+=\"%0A\"
   	message+=\"*Targets*:\"
   	message+=\"%0A\"
   	message+=\$TARGETS
   	curl -s --data \"text=\${message}\" \
   	--data \"chat_id=\$TG_CHAT_ID\" \
   	--data \"parse_mode=markdown\" \
   	\"https://api.telegram.org/bot\${TG_TOKEN}/sendMessage\"
   	" > /root/tg.sh

5. Open /root/tg.sh and return back you TG token and chat id values

The next notification will look like below: