Add util for getting mime types

backend/utils/files.py

@@ -0,0 +1,15 @@
+import mimetypes
+
+
+def get_mime_type(file_path: str) -> str:
+    """
+    Get the MIME type of a file based on the file path.
+
+    Parameters:
+        file_path (str): The path to the file from which to determine the MIME type.
+
+    Returns:
+        str: The MIME type of the file.
+    """
+    mime_type, encoding = mimetypes.guess_type(file_path)
+    return mime_type