Replace brainglobe-utils with qt-niu

[lochhh]

Description

What is this PR

• Bug fix
• Addition of a new feature
• Other

Why is this PR needed?
Following brainglobe/brainglobe-utils#107 (comment),
this PR replaces the obsolete brainglobe-utils dependency with qt-niu

How has this PR been tested?

This PR was tested while following the napari guide in PR #393.

Note

This PR is branched off PR #393 / (https://github.com/neuroinformatics-unit/movement/tree/document-napari-plugin)

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.82%. Comparing base (5d5e5ed) to head (8cb302f).
Report is 10 commits behind head on napari-dev.

Additional details and impacted files

@@             Coverage Diff             @@
##           napari-dev     #441   +/-   ##
===========================================
  Coverage       99.82%   99.82%           
===========================================
  Files              18       18           
  Lines            1122     1175   +53     
===========================================
+ Hits             1120     1173   +53     
  Misses              2        2           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud