feat(common): add get_repo_dir function and corresponding tests

python/common.py

@@ -4,6 +4,7 @@ from __future__ import annotations
 
 import logging
 from datetime import UTC, datetime
+from pathlib import Path
 from subprocess import PIPE, Popen
 
 from python.logging_config import configure_logger as _configure_logger
@@ -11,6 +12,11 @@ from python.logging_config import configure_logger as _configure_logger
 logger = logging.getLogger(__name__)
 
 
+def get_repo_dir() -> Path:
+    """Return the repository root directory."""
+    return Path(__file__).resolve().parents[1]
+
+
 def configure_logger(level: str = "INFO") -> None:
     """Configure the logger."""
     _configure_logger(level)