Add payment status to be displayed for instance in messagebox

[Magnusrm]

Description

Add payment as a status to be displayed for an instance currently in the payment process task.

Related Issue(s)

• Handle pay action in MessageBox to display current instance status #386

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)
• All tests run green

Documentation

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

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
50.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[SandGrainOne]

I'm not sure if this would work without changes in Altinn 2. Is that something you're investigating?

[acn-sbuad]

This will in the least require updates to the logic here.

And logic in the view might need reworking as well.

[SandGrainOne]

@olebhansen @RonnyB71 You guys have unfinished business for the Payment step related to how it's reflected in the message box.