[feature] Add LevelBar widget

ignis/widgets/levelbar.py

@@ -0,0 +1,37 @@
+from gi.repository import Gtk  # type: ignore
+
+from ignis.base_widget import BaseWidget
+
+
+class LevelBar(Gtk.LevelBar, BaseWidget):
+    """
+    Bases: :class:`Gtk.LevelBar`
+
+    An non-interactable progress/level bar.
+
+    Overrided properties:
+        - mode: The pattern with how the bar is rendered.  Default: ``continuous``
+
+    Mode:
+        - continuous: The value bar will be one single bar
+        - discrete: The value bar will be broken into discrete chunks when rendered
+
+    Args:
+        **kwargs: Properties to set.
+
+    .. code-block:: python
+
+        widgets.LevelBar(
+            max_value=100,
+            mode="continuous",
+            value=75,
+        )
+    """
+
+    __gtype_name__ = "IgnisLevelBar"
+    __gproperties__ = {**BaseWidget.gproperties}
+
+    def __init__(self, **kwargs):
+        Gtk.LevelBar.__init__(self)
+        self.override_enum("mode", Gtk.LevelBarMode)
+        BaseWidget.__init__(self, **kwargs)