[Feature request] add to basic day picker - show calendar week option

[f-do]

Hi, it will be great if you can add a "showCalendarWeek" attribute. So in the basic mode you can decide if you want to show as information the week as well.

this will also resolve this issue over here: https://github.com/ant-design/ant-design/issues/21726

[yuxincheng73]

Hi, I got started with adding the showWeek attribute and here's the PR:
#326