Refactor: Update ResizableRect and ResizableRectWithNameTypeAndResult…

[royshil]

… classes

This commit refactors the ResizableRect and ResizableRectWithNameTypeAndResult classes in the src/resizable_rect.py file.

• Import statements have been updated to include the TextDetectionTarget and TextDetectionTargetWithResult classes from the text_detection_target module.
• The setFlags method in the MiniRect class has been updated to use the QGraphicsItem.GraphicsItemFlag enum for improved readability.
• The ResizableRectWithNameTypeAndResult class now accepts a TextDetectionTarget object as a parameter instead of individual x, y, width, height, and name parameters.
• The setupAddButton method in the ResizableRectWithNameTypeAndResult class has been modified to use a smaller add button size and display a "+" symbol instead of "Add".
• The mini_rects attribute in the ResizableRectWithNameTypeAndResult class is now initialized with MiniRect objects created from the mini_rects attribute of the TextDetectionTarget object.

These changes improve the readability and maintainability of the code.