feat: add BoldLabel class

dzgui/views/components/labels.py

@@ -0,0 +1,12 @@
+from dzgui.util.format import embolden
+
+import gi
+gi.require_version("Gtk", "3.0")
+from gi.repository import Gtk  # noqa E402
+
+class BoldLabel(Gtk.Label):
+    def __init__(self, text: str):
+        super().__init__()
+
+        label = embolden(text)
+        self.set_markup(label)