Add status of signing and filtering for everybody

The signing is based on what https://rpki.cloudflare.com/?view=bgp
returns. It's probably not ideal, but it's the best I know.
I have used:
< 10% valid signatures: not signing
> 90% valid signatures: signing
otherwise: partial signing

I've then updates the status. For isp + cloud I've used:
- signing + filtering: safe
- not signing + not filtering: unsafe
- otherwise: partially safe

For transit:
- filtering: safe
- partially filtering: partially safe
- otherwise: unsafe