[Truncate] - Multi line truncation and scrollable tooltip

Is this a new component or an extension of an existing one?
existing component: Truncate

Describe the feature
Add support to set the number of lines to truncate to. For example I want to display descriptions up to 2 lines tall, afterwards show the ellipsis with tooltip.

On top of this, when truncating a description, often the tooltip opens to a large block of centre justified text which is not ideal. Can this component support a popover that is scrollable and doesn't centre justify text.

Jira Issue: PF-1932

从现有的 Truncate 组件开始，检查其当前的 tooltip 或 popover 行为。完成标准是支持可配置的行数、在溢出后显示省略号，并在可滚动且非居中的 tooltip 或 popover 中呈现较长的截断文本；验证两行描述的情况和长内容。