Refactor LSP manager and file handling

- Refactored LSPClient and LSPClientEvents to use workspace path and initialization options.
- Updated LSPManager to pass workspace path to client creation.
- Modified LSPManagerUI to handle user home paths and workspace configurations.
- Enhanced file handling to manage buffer and directory types.
- Introduced CreatedSourceViewEvent for source view creation event tracking.
- Added better error handling and logging for file operations.

Other minor UI and widget adjustments for improved layout and drag-and-drop handling.

src/core/containers/center_container.py

@@ -28,6 +28,7 @@ class CenterContainer(Gtk.Box):
         self.set_orientation(Gtk.Orientation.VERTICAL)
         self.set_hexpand(True)
         self.set_vexpand(True)
+        self.set_size_request(320, -1)
 
     def _setup_signals(self):
         self.connect("show", self._handle_show)