raw socket

[mStirner]

There are some Stolpersteine to solve, to work with raw sockets.

The biggest problems:

• nedds special capabilites
• does not work in worker threads

Due to the inactivity on the module no improvements are awaited.

Instead of using the module in a worker thread spawn a node.js child process, that uses the bridge.js cli tool.

In general it would be better to add a "icmp" socket type to the backend:
Additional to the iface.httpAgent() a iface.ping() method could be added for icmp socket interfaces.

A ping could also implemented without a special socket type "icmp".
When a interface is added, simple create similar to the Bridging request #51 a socket from type "raw" when .ping() is called and send/receive icmp messages. (Implemented under the hood in connector & backend)

Related issues:

• Set options for raw socket #50
• Refactor interface stream/socket handling backend#460