Cleanup, documentation added, new GUI

Tagger_modern.py

@@ -0,0 +1,18 @@
+# Imports
+import tkinter as tk
+from tkinter import ttk
+
+from src.ui.gui_modern import ModernApp
+from src.core.file_manager import list_files, FileManager
+from src.core.tag_manager import TagManager
+from pathlib import Path
+
+class State():
+    def __init__(self) -> None:
+        self.tagmanager = TagManager()
+        self.filehandler = FileManager(self.tagmanager)
+        self.app = ModernApp(self.filehandler, self.tagmanager)
+
+
+STATE = State()
+STATE.app.main()