Add helper function to identify when app running as pyinstaller app

Useful for when want the app to behave differently in pyinstaller app
scenario with frozen python. And in development scenarios

src/utils/helpers.py

@@ -1,5 +1,6 @@
 # Standard Packages
 import pathlib
+import sys
 from os.path import join
 
 
@@ -54,4 +55,9 @@ def load_model(model_name, model_dir, model_type):
         if model_path is not None:
             model.save(model_path)
 
-    return model
+    return model
+
+
+def is_pyinstaller_app():
+    "Returns true if the app is running from Native GUI created by PyInstaller"
+    return getattr(sys, 'frozen', False) and hasattr(sys, '_MEIPASS')