feat: added zig loaders for unix and refactor

sparse-beacon/src/lib.rs

@@ -0,0 +1 @@
+pub fn run_beacon_step() {}

sparse-beacon/src/main.rs

@@ -1,6 +0,0 @@
-fn main() {
-    let interfaces = pcap_sys::PcapDevIterator::new().unwrap();
-    for interface in interfaces {
-        println!("Found interface: {interface}");
-    }
-}