refactor: remove InfoBarWidget in favor of plugin-based one

- Replace direct InfoBarWidget with set_info_labels command that emits
  events to plugins
- Replace mini view widget in favor of plugin-based one
- Add widget registry exposure for code-container and editors-container
- Fix DND mixin exec_with_args call (tuple args issue)
- Add break statements in tabs_widget loops for efficiency
- Add _update_transparency call to BaseContainer

src/libs/dto/code/__init__.py

@@ -6,8 +6,9 @@
 from .code_event import CodeEvent
 from .register_provider_event import RegisterProviderEvent
 from .register_command_event import RegisterCommandEvent
-from .file_externally_modified_event  import FileExternallyModifiedEvent
-from .file_externally_deleted_event  import FileExternallyDeletedEvent
+from .file_externally_modified_event import FileExternallyModifiedEvent
+from .file_externally_deleted_event import FileExternallyDeletedEvent
+from .set_info_labels_event import SetInfoLabelsEvent
 
 from .get_new_command_system_event import GetNewCommandSystemEvent
 from .request_completion_event import RequestCompletionEvent

src/libs/dto/code/set_info_labels_event.py

@@ -0,0 +1,15 @@
+# Python imports
+from dataclasses import dataclass, field
+
+# Lib imports
+import gi
+from gi.repository import Gio
+
+# Application imports
+from .code_event import CodeEvent
+
+
+
+@dataclass
+class SetInfoLabelsEvent(CodeEvent):
+    info: tuple[str or Gio.File] = None