[tools] Print command line invocation in debug log

Useful for debugging errors

Change-Id: Ibab5acec4a8e927262dbc12d5d4cc4cd27ebf0ad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3172754
Auto-Submit: Sathya Gunasekaran  <gsathya@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76961}

tools/run_perf.py

@@ -702,6 +702,7 @@ class DesktopPlatform(Platform):
   def _Run(self, runnable, count, secondary=False):
     shell_dir = self.shell_dir_secondary if secondary else self.shell_dir
     cmd = runnable.GetCommand(self.command_prefix, shell_dir, self.extra_flags)
+    logging.debug('Running command: %s' % cmd)
     output = cmd.execute()
 
     if output.IsSuccess() and '--prof' in self.extra_flags: