MNT: prepare wradlib for future xradar usage, rename wradlib radar backends, adapt internals to fix issues with xradar in same environment

FIX: radiosonde data changed on server

Changes in # read metadata under get_radiosonde() (#597)

* Changes in # read metadata under get_radiosonde() taking care of missing station identifier

FIX: use 'None' instead of ambiguous 'False' (`0`) for comparison (#595)

FIX: fix assignment error in to_odim export function

ENH: Add RADVOR product types RV, RE and RQ, add prediction time handling for capable products

Co-authored-by: Kai Mühlbauer <kmuehlbauer@wradlib.org>

ENH: read RADOLAN ascii format

FIX: enable ODIM reader to read `qualityN` fields (similar to `dataN`). (#588)

MNT: fix SRTM testing if resource is not available, implement timeout (#587)

FIX: cfradial1 reader alignments (#585)

check for WRADLIB_EARTHDATA_BEARER_TOKEN in pytest

MNT: use Bearer Token instead of credentials (#584)

FIX: add missing finally (#581)

FIX: more scipy deprecations

FIX: sort angles when calculating resolution, reduce threshold

FIX: specify engine within xarray loaders

MNT: do not add 404 resources to demlist

MNT: remove .item()

MNT: update scipy namespace deprecation

MNT: update scipy namespace deprecation