feat: report Gantt chart usage

[bwajtr]

Description

Guillermo requested to track usage of Gantt Charts separately from the general vaadin-chart usage.

This PR adds that tracking to the flow component. Used LitRenderer custom usage tracking as an example:

UsageStatistics.markAsUsed("flow-components/LitRenderer", null);

There is also tracking of all Vaadin custom elements implemented in the element-mixin.js, however I haven't found any custom tracking that would manipulate the window.Vaadin.registrations directly, therefore I do the tracking from Java.

Part of #4731

Type of change

• Bugfix
• Feature

Checklist

• I have read the contribution guide: https://vaadin.com/docs/latest/contributing/overview
• I have added a description following the guideline.
• The issue is created in the corresponding repository and I have referenced it.
• I have added tests to ensure my change is effective and works as intended.
• New and existing tests are passing locally with my change.
• I have performed self-review and corrected misspellings.
• I have not completed some of the steps above and my pull request can be closed immediately.

Additional for Feature type of change

• Enhancement / new feature was discussed in a corresponding GitHub issue and Acceptance Criteria were created.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

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

See analysis details on SonarQube Cloud

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.7.0.alpha9 and is also targeting the upcoming stable 24.7.0 version.