CLI server refactor

Description

This merge request introduces several key changes and improvements:

• The RPC server is now separated from the main application.
• The parent_id is automatically resolved by examining the Qt parent-child hierarchy.
• The property previously named name has been renamed to object_name to avoid conflicts with pyqtgraph’s name and _name attribute.
• The object_name is now linked to the Qt ObjectName, and it is ensured to be unique among sibling widgets sharing the same parent.
• The __init__ method for all widgets has been updated to align with the new constructors in BECWidget and BECConnector. BECConnector now always starts with at least a QObject to guarantee the correct parent and objectName assignment.
• All widgets have been adjusted to accommodate these initialization changes.
• The cleanup process for plotting widgets and their associated popups and settings menus has been reviewed and updated.
• The setter for RPC has been fixed.
• Autoupdate functionality has been reintroduced and adjusted to work with the new plotting framework in one of the BECDocks within BECDockArea.
• A simple launcher menu has been introduced with launcher scripts and a basic BECMainWindow. This window currently provides a link to the documentation and a theme changer and will be extended with an improved design in the future.
• Cleanup of RPC-enabled widgets has been performed. Some widgets (such as ResumeButton and DarkModeButton) have been removed from the RPC interface as they were not suitable for RPC.

Related Issues

closes #444 (closed), #447 (closed), #356 (closed) #307 (closed), #297 (closed), #467 (closed), #471 (closed)
relates to #463 (closed),

Potential side effects

The new framework should be used and tested to find edge cases. This is one of the main breaking changes for V2!

Screenshots / GIFs (if applicable)

[Include any relevant screenshots or GIFs to showcase the changes made.]

Additional Comments

None.

Definition of Done

• Documentation is up-to-date.