[WIP] Adding a Wireguard Exporter

[Lol3rrr]

Adding a simple exporter script for Wireguard interfaces/peers.
The script uses the wg show all dump command in the background to get all its information.

This is the Pull Request for Issue #124

Exposed Metrics

• wireguard_endpoints
• wireguard_allowedips
• wireguard_latesthandshake
• wireguard_transferrx
• wireguard_transfertx
• wireguard_persistentkeepalive

[dswarbrick]

For this PR to be considered, commits need to be signed off, and CI tests need to pass.

[dswarbrick]

This is still marked as WIP, almost two years after initial submission. Please mark it as ready (and rebase on master, so that latest CI tests will run) if you still wish it to be mergeed. Otherwise it will be closed.

[Lol3rrr]

As I personally have no more need for this and also don't have the time to work on this anymore, i will simply close this