feat: add Mods class

dzgui/views/pages/mods.py

@@ -0,0 +1,19 @@
+from typing import TYPE_CHECKING
+from dzgui.views.trees.tree_mods import ModTreeView
+
+import gi
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk, Gdk  # noqa
+
+if TYPE_CHECKING:
+    from dzgui.controllers.mc import Controller
+
+class Mods(Gtk.ScrolledWindow):
+    def __init__(self, controller: "Controller") -> None:
+        super().__init__()
+
+        self.controller = controller
+        self.tree = ModTreeView(controller)
+
+        self.add(self.tree)
+        self.controller.register_widget("modtreeview", self.tree)