Use bootloader crate to create bootable disk images

src/main.rs

@@ -1,3 +1,21 @@
-fn main() {
-    println!("Hello, world!");
+use bootloader::DiskImageBuilder;
+use std::{env, error::Error, path::PathBuf};
+
+fn main() -> Result<(), Box<dyn Error>> {
+    // set by cargo for the kernel artifact dependency
+    let kernel_path = PathBuf::from(env!("CARGO_BIN_FILE_KERNEL"));
+    let disk_builder = DiskImageBuilder::new(kernel_path);
+
+    // place the disk image files under target/debug or target/release
+    let target_dir = env::current_exe()?;
+
+    let uefi_path = target_dir.with_file_name("blog_os-uefi.img");
+    disk_builder.create_uefi_image(&uefi_path)?;
+    println!("Created UEFI disk image at {}", uefi_path.display());
+
+    let bios_path = target_dir.with_file_name("blog_os-bios.img");
+    disk_builder.create_bios_image(&bios_path)?;
+    println!("Created BIOS disk image at {}", bios_path.display());
+
+    Ok(())
 }