produce no-weight SCF_plus data

[shlff]

Consider using the following code:

https://github.com/QuantEcon/lecture-python-intro/blob/f3aa05e3023ddb3e739a426570e6b635f64f88fa/lectures/inequality.md?plain=1#L216-L222

The sample size of new dataset is set to 10_000

[jstac]

Thanks @shlff .

I won't review this because I'm not familiar with pandas. Please find someone on the team to review your work.

Please generate the data, save it and show @maanasee how to access the data so that she can use it in her work.