* = calendar, crm_livechat, hr, hr_holidays, im_livechat, mail_bot, sms,
snailmail, website_livechat
This commit will change the declaration of the models with the aim of
getting closer to a plain JSON-object. It allows us to eliminate a wide
portion of boilerplate code, making the declaration shorter, more
declarative, and less redundant, but mainly, it prepares the ground for
further changes.
Task-2695223
closesodoo/odoo#79259
Related: odoo/enterprise#22042
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>