This PR cleanup service typing:
* Introduce `addons/mail/tooling/type/services.d.ts` to automatically type
services imported by `useService` hook.
* Correctly type service constructor, setup and start functions.
* Remove now useless `@type`.
* Removing `Object.assign` for services variables.
* Type OdooEnv.services to services.
closesodoo/odoo#131192
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>