Show user a tour if user install this extension at the first time

[newbe36524]

As a user, AF will show me a small tour of this extension.
It will take me as steps below:

1. "Go ahead or skip", I can start this tour or skip if I am quite familiar with AF
2. "Add tag to bookmark", shows how many bookmarks imported and invites the user to add a new tag for the latest bookmark
3. "Try search", shows a small search box for users to test searching
4. "Agree to privacy agreement to enable more features", invite the user to agree privacy agreement and join Anonymous Improving
5. "Sync data to the cloud", if the user accepted privacy agreement, it invite the user to sync tag to the cloud by the cloud provider
6. "Thanks and Done". go to manager UI and pin it

take this component to impl this feature
https://ant-design-blazor.gitee.io/zh-CN/components/steps