core (memory/sqla): generic `get` + `session_add` in `delete`: new generic `get` allow to retrieve an ORM object with given column and value, and optionally join load attributes. In `delete`, it is now possible to specify instances to add to session, this allow, to update them in the same transaction. It is also now possible to specify a list of object to delete them all in the same transaction. rel 367

[DEFAULT]
xmpp_domain = server1.test
email_server = libervia-backend.test
email_port = 8025
email_admins_list = admin@server1.test

[component file-sharing]
tls_certificate = /usr/share/libervia/certificates/server1.test.pem
tls_private_key = /usr/share/libervia/certificates/server1.test-key.pem
http_upload_public_facing_url = https://libervia-backend.test:8888