core: get rid of `pickle`: Use of `pickle` to serialise data was a technical legacy that was causing trouble to store in database, to update (if a class was serialised, a change could break update), and to security (pickle can lead to code execution). This patch remove all use of Pickle in favour in JSON, notably: - for caching data, a Pydantic model is now used instead - for SQLAlchemy model, the LegacyPickle is replaced by JSON serialisation - in XEP-0373 a class `PublicKeyMetadata` was serialised. New method `from_dict` and `to_dict` method have been implemented to do serialisation. - new methods to (de)serialise data can now be specified with Identity data types. It is notably used to (de)serialise `path` of avatars. A migration script has been created to convert data (for upgrade or downgrade), with special care for XEP-0373 case. Depending of size of database, this migration script can be long to run. rel 443

#!/usr/bin/env python3

"""Adapt Libervia docstring style to autodoc"""


def process_docstring(app, what, name, obj, options, lines):
    lines[:] = [
        l.replace("@param", ":param").replace("@raise", ":raises")
        for l in lines
    ]


def setup(app):
    app.connect("autodoc-process-docstring", process_docstring)
    return {
        'version': '0.1',
        'parallel_read_safe': True,
        'parallel_write_safe': True,
    }