Simple average PSF

[MaxusTheOne]

Adds an average PSF as the first image of a PSF summary stack

My version has it with a title. Once it is stable enough I will maybe open a big pull request

[MaxusTheOne]

It's not optional, but it should also be a seperate picture when downloading
So I figured it was an ok solution to #64

[Copilot]

Pull Request Overview

This pull request introduces an average PSF calculation and integrates it as the first image in the PSF summary stack. Key changes include:

• Adding a new method get_averaged_bead in the analyzer to average bead data.
• Adding getter methods (get_date, get_version, get_dpi) for additional parameters.
• Modifying the measurement callback in the dock widget to include processing and concatenation of an averaged PSF image.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/napari_psf_analysis/psf_analysis/analyzer.py	Adds a method for averaging bead data and additional getters.
src/napari_psf_analysis/_dock_widget.py	Integrates the averaged PSF image into the measurement stack display.

Comments suppressed due to low confidence (1)

src/napari_psf_analysis/psf_analysis/analyzer.py:57

• [nitpick] Consider revising informal language such as 'Rn' to 'Currently' for clarity in the TODO comment.

# TODO: Implement a filter so it does not crash. Rn the program would have crashed regardless

[Copilot]

The exception handling in get_averaged_bead prints an error without returning a value, which may lead to issues downstream. Consider explicitly returning None or re-raising a custom exception for better error propagation.

Suggested change

	return None