feat: Added wrapper crate for including ipxe binaries

ipxe/src/embed.ipxe

@@ -0,0 +1,5 @@
+#!ipxe
+
+dhcp
+
+echo "Hello, World!"

ipxe/src/lib.rs

@@ -0,0 +1,3 @@
+use include_dir::{Dir, include_dir};
+
+pub static IPXE_DIR: Dir<'_> = include_dir!("$OUT_DIR/ipxe");