Add menu items for showing the Options dialog and the Slit Calculator
tool.

Re #26533

Coordinate via the main window to disable the instrument drop-down box
on all Batch tabs if any batch is processing or autoprocessing.

Re #26536

Use clearer names to indicate a notification of a request, a function that performs the action, and a notification
of a result from that action.

Re #26536

Re #26536

This is no longer necessary now that the instrument is stored in and set
by the main window

Re #26536

Setting initial state is done by the main window after adding a new
batch is complete and all presenters know their parent presenter. Move
the initialisation of the instrument list to the same place.

Re #26536

The instrument has been moved to the main window so that it can be
synchronised between batches

Re #26536

Force the compiler to generate the move constructor/assignment operator.
These are no longer implicitly declared since the addition of the
user-declared destructor. Also delete the copy constructor/assignment
operator as these are illegal operations.

Re #26498

This causes a compile error unless the destructor is defined in the cpp file (see the comments on PR #26510)

Re #26498

Add an interface to the BatchPresenterFactory.

Re #26498

Recent changes mean the classes now have shorter names so the namespace ensures will will not have any clashes with other GUIs.

Re #26535

Re #26025

Add methods to coordinate via main window so that only one autoprocessing process can be running at a time

Re #26025

- This was to do with the way the presenter is created as an optional. It doesn't need to be an optional here - a unique pointer is better and makes ownership clearer.
- This commit also includes some tidying of the MainWindowSubscriber which was being used incorrectly.
- It also includes replacing some calls to m_presenter with calls to m_notifyee. They are the same object but we should use m_notifyee to be more in keeping with MVP. There is one remaining use of m_presenter in closeEvent but it is beyond the scope of this PR to fix that.

Re #23027

The interfaces are being simplified such that running python code from the main window presenter will no longer be required.

Re #23027

MainWindow and Batch subdirectories have been created for these GUI components.
A Common subdirectory has been created for miscellaneous shared utilities.
Unused files have been removed