feat: Update MainWindow and UI design for PyCompiler ARK - IDE

- Changed window title to "PyCompiler ARK - IDE" and adjusted geometry to 1400x840.
- Implemented a new UI design (ui_design_v2.ui) with a VS Code-like dark theme.
- Enhanced UI initialization to prefer the new V2 UI design, falling back to legacy if not found.
- Improved layout management with collapsible panels and added functionality for a toggleable console.
- Updated button actions and tooltips for better user experience.

Author: PyCompiler ARK++

Core/MainWindow.py

@@ -163,8 +163,10 @@ def __init__(self):
         super().__init__()
         global _latest_gui_instance
         _latest_gui_instance = self
-        self.setWindowTitle("PyCompiler ARK++")
-        self.setGeometry(100, 100, 1280, 720)
+        
+        # Set window properties before UI initialization
+        self.setWindowTitle("PyCompiler ARK - IDE")
+        self.setGeometry(100, 100, 1400, 840)
         self.setAcceptDrops(True)
 
         self.workspace_dir = None