feat: add Gantt specific API to Charts

[bwajtr]

Description

This change brings support for Gantt specific API to Vaadin Charts.

A new ChartType has been introduced to be able to activate Gantt chart feature.
Also, after discussion with Diego and Rolf we:

• decided to support only GanttSeries with Gantt charts (so although Highcharts theoretically supports also XRange series in the Gantt chart, we will not support this case)
• decided to make a combination of Gantt chart and timeline property invalid - in the web component the value of timeline is ignored when chart is Gantt chart, in the Java api we throw IllegalArgumentException when somebody tries to use the Gantt chart and activate timeline at the same time.

New classes or attributes were added to cover the Highcharts 9.2.2 Gantt Chart API. Changes to existing API classes reflect probably the changes between earlier versions of Highcharts and the currently supported 9.2.2. In any case, if change to existing class was made, I made sure it's valid also for other Highcharts charts.

I've added as many properties as I could, hopefully not missing anything - with the exception of "drag and drop" support (series.gantt.dragDrop)... however, that is not supported anywhere in the Vaadin Charts API.

I've added a lot of Demos in form of Integration tests to verify that the changes in the API work.

Fixes #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.

[bwajtr]

@DiegoCardoso is there a way how to get around th SonarCloud Code Analysis? It's bragging about the code duplication (even in the existing Chart files) - but to be honest the Chart API is full of duplication and I really don't feel like I should fix that in scope of this task

[DiegoCardoso]

@DiegoCardoso is there a way how to get around th SonarCloud Code Analysis? It's bragging about the code duplication (even in the existing Chart files) - but to be honest the Chart API is full of duplication and I really don't feel like I should fix that in scope of this task

There are some battles we can't really win. I think we can ignore them. The SonarCloud Code Analysis is not a required check.

[DiegoCardoso]

Added a few comments to the PR.

[sonarqubecloud]

Quality Gate failed

Failed conditions
32.1% Duplication on New Code (required ≤ 10%)

See analysis details on SonarQube Cloud

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.7.0.alpha5 and is also targeting the upcoming stable 24.7.0 version.