Command for gas price

# Command

`/gas`

# Endpoint

https://gasprice.poa.network/

# Return message

```
⛽️ Gas price (hosted by POA)
* 6.0 slow
* 8.0 standard
* 15.0 fast
* 20.21 instant
```

# Error handling

In case 'health' is not 'true' or a null result is somehow achieved, an error message should be thrown & logged.