Rename get git last commit message example

Author: pymongo

Diff for: examples/basic_execute_shell_command.rs renamed to examples/exec_command_get_git_last_commit_info_before_compile.rs

@@ -14,6 +14,10 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         .output()?;
     let last_commit_str = String::from_utf8(cmd_res.stdout)?;
     let last_commit: CommitInfo = toml::de::from_str(&last_commit_str)?;
-    dbg!(last_commit);
+    dbg!(&last_commit);
+    // if in build.rs, emit git_last_commit_info to compile time and retired use env! as const &st
+    // println!("cargo:rustc-env={}={}", "LAST_COMMIT_HASH", last_commit.hash);
+    // println!("cargo:rustc-env={}={}", "LAST_COMMIT_DATE", last_commit.date);
+    // println!("cargo:rustc-env={}={}", "LAST_COMMIT_MESSAGE", last_commit.message);
     Ok(())
 }