feat: gui progressbar simple

pgwrapper.py

@@ -0,0 +1,21 @@
+import customtkinter
+
+class ProgressBarWrapper:
+    '''Provide a progress bar wrapper, so PGs can be created and destroyed
+    on the GUI level without affecting the references stored for updates
+    in the DataBackend and Software Objects'''
+
+    def __init__(self):
+        self.progress_bar = None
+
+    def new(self, tk_parent):
+        self.progress_bar = customtkinter.CTkProgressBar(tk_parent)
+        self.progress_bar["maximum"] = 10000
+        self.progress_bar.set(0)
+        return self.progress_bar
+    
+    def get_pb(self):
+        if self.progress_bar:
+            return self.progress_bar
+        else:
+            raise AssertionError("No progress bar in this wrapper created")