[ADD] hr_job_no_of_employee: Backport from 19.0 core to 18.0

[hitrosol]

This feature is taken from the core in odoo core 19.0

[hitrosol]

not sure there is error like this:

errors that caused failure (1):
2025-11-28 04:22:07,666 298 WARNING odoo odoo.addons.attachment_indexation.models.ir_attachment: Attachment indexation of PDF documents is unavailable because the 'pdfminer' Python library cannot be found on the system. You may install it from https://pypi.org/project/pdfminer.six/ (e.g. pip3 install pdfminer.six)
Error: Errors detected in log.

Error: Process completed with exit code 1.

I think my module doesn't related to pdminer ?

[alexey-pelykh]

Interesting backport — the description correctly notes this is native in 19.0, which is good.

CI tests are failing though, and the module doesn't include any tests of its own. Even for a backport, adding a basic test for the computed field and action would be worth it. Also, CONTRIBUTORS.md is empty.