Multi is the default api for methods, it is not necessary to explicitly
decorate methods with it, adds clutter and most people use it because
they see that the rest of the code uses it.
Done with `find . -type f -name '*.py' | xargs sed -i '/@api.multi/d'`
Purpose
=======
We would like to re-use the work entries in the attendance module.
As hr_attendance is not dependant on hr_payroll, we move the whole
mechanism into its own module.
This could be reused too into others modules, like forecasting or whatever.
TaskID: 1904850
closesodoo/odoo#34434
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>