feat: 3615 add button for create new subform in nextrecommendedaction

[JamalAlabdullah]

Description

• Added new buttom (Opprett et nytt skjema) inside the nextReccomendAction to add a new subform.
• Added a new component called CreateNewLayoutSet for rendering a new StudioCard when the user clicks the buttom (Opprett et nytt skjema)
• Save the new added subform to other subforms.
• Added tests
• NOTE: For this issue the new StudioCard includes just input for adding a new subform, and binding with datamodel will be fixed in this #13928
• Here is the solution for now:

createNewSybform.mp4

Related Issue(s)

• Button for "create new subform layoutset" in NextRecommendedAction and saving #13615

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

Attention: Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 95.13%. Comparing base (34fd4d4) to head (a9c93da).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...eNewSubformLayoutSet/CreateNewSubformLayoutSet.tsx	94.44%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #13925   +/-   ##
=======================================
  Coverage   95.13%   95.13%           
=======================================
  Files        1673     1675    +2     
  Lines       22191    22220   +29     
  Branches     2609     2611    +2     
=======================================
+ Hits        21111    21139   +28     
- Misses        834      835    +1     
  Partials      246      246           

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[Jondyr]

Nice 👍
Added some questions and suggestions for changes:

[lassopicasso]

Tested in dev - works as expected 🙂