Added IOMixin for reporter

src/nnbench/reporter/mixins.py

@@ -0,0 +1,45 @@
+import os
+from typing import Any
+
+
+class IOMixin:
+    """
+    A mixin class providing file I/O operations for benchmark reporters.
+
+    This mixin offers common file handling functionalities like opening, closing, reading and writing.
+    This class can be used to create any BenchmarkReporter which has requirement of reading file.
+    """
+
+    def open(self, file_path: str) -> None:
+        """
+        Opens a existing file at a given file_path for read and write operations.
+
+        Parameters
+        ----------
+        file_path : str
+            The path to the target file or directory.
+
+        Raises
+        ------
+        FileNotFoundError
+            If the target file is not present at the file_path.
+        """
+        if not os.path.exists(file_path):
+            raise FileNotFoundError
+        self.file_path: str = file_path
+        with open(file_path, "r") as file:
+            self.raw_records = file.read()
+        self.file = open(file_path, "w")
+
+    def close(self, **kwargs: dict[str, Any]) -> None:
+        """Closes the currently open file."""
+        if self.file:
+            self.file.close()
+            self.file = None
+            self.file_path = None
+
+    def read_records(self) -> Any:
+        return self.raw_records
+
+    def write_records(self, content: str) -> None:
+        self.file.write(content)