changed the way on how to get the version to a json file, added helper to libreftit

refit/src/modules/librefit.py

@@ -1,5 +1,6 @@
 import os
 import sys
+import json
 
 from .refit_logger import logger
 
@@ -247,3 +248,30 @@ def create_parallel_directories(input_path: str, target_depth: int, width: int,
             current_depth=0,
             name=name,
         )
+
+
+def get_version_from_file(input_path) -> str:
+    """Returns the version of the program.
+
+    The function accepts an path to a version file as a string and it
+    returns it version number formatted.
+
+    Arg:
+        input_path (str):   The absolute or relative path to the
+                            version file.
+
+    Example:
+        >>>get_version_from_file("/path/to/file.json")
+        '0.2.1'"""
+    # Expands the input path
+    expanded_path = os.path.expanduser(input_path)
+
+    # Opening the file and  reading its contents, saving as as an dict.
+    file_path = open(expanded_path)
+    prog_version = json.load(file_path)
+
+    # Formatting the output before returning the string again
+    pretty_version = (
+        f"{prog_version['major']}.{prog_version['minor']}.{prog_version['patch']}"
+    )
+    return pretty_version