Add tool to display Secure Execution system information

Add 'pvinfo' a tool to display the information of enabled flags, and
print the debug information in Yaml and Human format.

Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Serena Santosh <serena@linux.ibm.com>
Signed-off-by: Ann Mariya Jojo <annjojo@linux.ibm.com>
Signed-off-by: Annu Sharma <annu09@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>

rust/pvinfo/src/main.rs

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: MIT
+//
+// Copyright IBM Corp. 2025
+
+//! Main function for the PV Info Tool
+
+use anyhow::Result;
+use clap::Parser;
+use std::io::{self, Write};
+
+mod cli;
+mod constants;
+mod handlers;
+mod io_utils;
+mod pvinfo;
+mod se_status;
+mod strings;
+
+use crate::cli::{CliOptions, Commands, OutputFormat};
+use crate::constants::*;
+use crate::handlers::handle_supported_flags;
+use crate::io_utils::check_uv_exists;
+use crate::pvinfo::PvInfo;
+use std::path::PathBuf;
+
+fn main() -> Result<()> {
+    // Parse CLI arguments and apply post-processing
+    let mut cli = CliOptions::parse();
+    cli.post_process();
+    let base_dir = PathBuf::from(BASE_DIR);
+    let query_dir = base_dir.join(QUERY_DIR);
+    check_uv_exists()?;
+    let mut stdout = io::stdout();
+    if cli.version {
+        utils::print_version!(2025);
+        return Ok(());
+    }
+    match &cli.command {
+        // Handle the supported-flags subcommand
+        Some(Commands::SupportedFlags {
+            secret,
+            attestation,
+            header,
+        }) => {
+            handle_supported_flags(&mut stdout, *secret, *attestation, *header, query_dir)?;
+        }
+        None => {
+            let data = PvInfo::read(&cli, &base_dir, &query_dir);
+            // Print output in the requested format
+            match cli.format {
+                OutputFormat::Human => data.write(&mut stdout)?,
+                OutputFormat::Yaml => write!(stdout, "{}", serde_yaml::to_string(&data).unwrap())?,
+            }
+        }
+    }
+
+    Ok(())
+}