main: print measurements when build is successful

Like the nitro-cli tool, print the measurements when the EIF file is
successfully built. This allows users to use those PCR values for
reference values during attestation.

Signed-off-by: Jake Correnti <jakecorrenti+github@proton.me>

Author: jakecorrenti

src/main.rs

@@ -217,7 +217,8 @@ pub mod build {
             .open(args.path)
             .context("failed to create output file")?;
 
-        build.write_to(&mut output);
+        let measurements = build.write_to(&mut output);
+        println!("{:#?}", measurements);
 
         Ok(())
     }