Unify list filter sections

src/ccma/ui/sections.py

@@ -0,0 +1,10 @@
+from __future__ import annotations
+
+import tkinter as tk
+from tkinter import ttk
+
+
+def titled_frame(parent: tk.Misc, title: str) -> ttk.LabelFrame:
+    frame = ttk.LabelFrame(parent, padding=(12, 10))
+    frame.configure(labelwidget=ttk.Label(frame, text=title, style="TimelineHeader.TLabel"))
+    return frame