feat(subform): Automatically add closesubformbuttons

[Jondyr]

Description

• Added new MediatR handlers for subform layoutset & layout addition.
  • Uses a new AppDevelopmentService method for adding components to a layout, to add a closesubformbutton automatically when a new page for a subform is created

Screen.Recording.2024-11-07.154902.mp4

Related Issue(s)

• Automatically add the closeSubformButton to any layout created in a subform #13844

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)

Documentation

• User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.28%. Comparing base (4d8c7e3) to head (aa1afdc).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #14009   +/-   ##
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  Coverage   95.28%   95.28%           
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  Files        1763     1763           
  Lines       23000    23000           
  Branches     2676     2676           
=======================================
  Hits        21915    21915           
  Misses        836      836           
  Partials      249      249           

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[JamalAlabdullah]

It looks good for me and it works fine, It would be nice if @mlqn can have a look also

[lassopicasso]

It looks good for me and it works fine, It would be nice if @mlqn can have a look also

I have also taken a look at it. It looks great. I will be so bold to move it to test. 😄

[lassopicasso]

Tested in dev - works as expected :) Great work!