Spectrum Widget
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A widget that allows plotting spectrum data using Plotly, providing a configurable visualization of a spectrum attribute. 

The widget shows a spectrum plot based on selected indices from the spectrum attribute, with options to configure both X and Y axes independently.

Widget Settings
================

The user has the ability to:

- **Select the Device and Spectrum Attribute**: Choose the specific device and its corresponding spectrum attribute to visualize in the plot.
- **Show Y value at index**: Configure which index of the spectrum data to use for the Y-axis. Leave empty to use the normal index increment.
- **Show X value at index**: Configure which index of the spectrum data to use for the X-axis, independently of the Y-axis. Leave empty to default to normal index values.
- **Attribute Display**: Choose how the attribute is displayed in the title—either by its name or its label. The label is shown by default.
- **Show Title**: Display the title of the plot, which can include the device and attribute information.
- **Show Tango Database Name**: Toggle the display of the Tango database name alongside the device information in the plot title.
- **Inelastic Y Axis**: Adjust the Y-axis to be inelastic, modifying its range to avoid tight bounds on the data points.

\ |IMG1|\ 

Widget Design
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Once configured, the plotted spectrum will appear as shown in the following image:

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.. |IMG1| image:: _static/img/spectrum_widget_inspector.png

.. |IMG2| image:: _static/img/spectrum_widget_view.png