feat: add Title property to MultiUrlPicker for link title retrieval

[humandigital-michiel]

To get the title of the link in graphql

[nikcio]

Hi @humandigital-michiel,

This looks like a fine addition. Can you update the PR with the correct snapshot files (From the integration tests):

1. Find the folder: src\Nikcio.UHeadless.IntegrationTests\Snapshots
2. Delete the folder
3. Then run dotnet test inside src\Nikcio.UHeadless.IntegrationTests
   a. This will regenerate the snapshots with the correct content.
   b. Note the first run will make all tests fail as the snapshot it's checking against is missing this is expected. If you want to make sure everything is as it should be you can just run dotnet test a second time.

[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

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