Enabling bufr data download and store into dataframe by using pdbufr

[meteoDaniel]

One big issue by using BUFR data is the reading process. https://github.com/ecmwf/pdbufr provides an accurate service for this issue.
So I guess with this software it should be able to provide support for BUFR data.

Let me know what you think about this.

[gutzbenj]

Dear @meteoDaniel ,

thanks for the pointer!

The new PR allows for parsing bufr data, given that the user adds the keyword read_bufr=True to the request.

On behalf orf #482 we'll have to wait to merge this, as of the current critical relation between eccodes (the core library) and its python bindings, which are being heavily discussed at this moment.

Cheers,
Benjamin