Bump version, implement relevant features and bug fixes

[po09i]

Description

This PR bumps the version of Shimming toolbox to version: 7087b9f20ef2bb0f1366dd8e6a8dfc440b349aed

It also adds the following features relevant to the new version:

• There is a new 'auto' value for the --slice option. Sets it as the default option.
• If the --slice option is set to auto, the --slice-factor option is not displayed.
• fatsat dropdown
• Add the regularization factor option
• Refactors how the help text gets fetched to be automated

If fixes the following bugs:

• Floating window caused an error when selecting a button that imported from the overlay
• When required arguments were not filled in, the error message was displayed on the terminal instead of fsleyes
• The scrolled window was not being updated when changing dropdown tabs
• Paths with spaces are now correctly handled (dcm2bids does not handle them, so that is still an issue)

Linked Issues

Fixes #44
Fixes #38
Fixes #43
Fixes #42

[4rnaudB]

Issues #38, #43 and #42 were fixed, but there is still an error for #44 when adding a space in file path and subject name on Linux mint. In the Dicoms to Niftis window, I was successful with a folder path without spaces, but the program failed when I added one. Same thing happened with the subject name option.

[po09i]

@4rnaudB Can you try the other CLIs? Everything should work except st_dicom_to_nifti (dcm2bids does not support it yet). I updated the description to mention that st_dicom_to_nifti does not work since it's a dcm2bids issue.

[4rnaudB]

Works well