Refactor using Tauri (#278)

crates/openconnect/build.rs

@@ -0,0 +1,12 @@
+fn main() {
+  // Link to the native openconnect library
+  println!("cargo:rustc-link-lib=openconnect");
+  println!("cargo:rerun-if-changed=src/ffi/vpn.c");
+  println!("cargo:rerun-if-changed=src/ffi/vpn.h");
+
+  // Compile the vpn.c file
+  cc::Build::new()
+    .file("src/ffi/vpn.c")
+    .include("src/ffi")
+    .compile("vpn");
+}