Prepare release 2.10.0

[veenstrajelmer]

Todo:

• Make conversion from tzone to minutes in hatyan.write_components() flexible #357
• add attrs in ddlpy_to_hatyan() #358
• update action versions in workflows #361
• Align units in ddlpy_to_hatyan #363
• Cleanup example scripts #365
• Add support for python 3.13 #367
• discuss: less flexible units (and less mistakes) after align units throughout code #364, since meters are enforced upon writing to dia/component file. This can be made more flexible, but what is desired?
• use units in figures
• consider removing origin attribute throughout code, what is added value? >> useful for component merging, but consider adding origin only upon analysis
• Drop Python 3.8 support #87

Optional:

• fix calc_HWLWnumbering() for IJMBTHVN #329
• extract component splitting ampfacs/degincrs from ana-file of linked station #140
• Issues with auto-derive xfac from manual metadata #197
• Generate statistics csv #235
• discuss deriving extremes: is spline fit required or 1min prediction ok? Is is also used (and stable) for waterlevel measurements or different algorithm?