Landing page for the data modelling tool

[TomasEng]

Description

I have added a landing page dialog according to the sketch in the referred issue. The dialog renders when the DataModelling component mounts and there are no data models present.

I would appreciate feedback on whether my code could exploit common components and such in a better way.

Related Issue(s)

• #8831

Verification

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

Documentation

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

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
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No Coverage information
No Duplication information

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

92.3% Coverage
0.0% Duplication