Setup for CI

• Comment out problematic packages from the workspace Cargo.toml
• Make the simple3 juno sample also a test
• Add support to the juno! macro for compiling Hercules IR directly, so that we can make the hercules_samples also tests (matmul, dot, fac)
• Fix an issue with inlining

hercules_opt/src/pass.rs

@@ -676,7 +676,7 @@ impl PassManager {
                         .stdin(Stdio::piped())
                         .stdout(Stdio::piped())
                         .spawn()
-                        .unwrap();
+                        .expect("Error running clang. Is it installed?");
                     assert!(clang_process.wait().unwrap().success());
                     println!("{}", output_archive);