Add support for netlink socket communication for interpreter-kernel messages

[masomel]

This communication channel is used by the kernel to send the interpreter callstack requests and by the interpreter to pre-emptively send execution context to the kernel for context preservation across dynamic execution boundaries (i.e. subprocess exec, async calls, thread creation).

Subtasks:

• [x] Initialize communication channel at interpreter initialization
• [x] Add listener for kernel upcalls
• [x] Call callgraph send function
• [x] Close communication channel at interpreter shutdown
• [ ] Call save context on asynchronous operations