[MOV] hr_work_entry_contract,hr_work_entry_holidays: move from enterprise to community

Before this commit, hr_work_entry_contract and hr_work_entry_holidays were defined in enterprise but those modules could be integrated with some community applications, like hr_attendance.

taskid: 2222790

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closes odoo/odoo#66247

Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>