This commit message cleans up the demo data.
First of all, it's good to have a good organization model, and secondly,
it's important for the demonstration of the org chart view
(that will be deployed in 17).
In particular, here we:
-create a department hierarchy, and assign colors to each department
-add the manager to each department
task-3510243
closesodoo/odoo#135967
Related: odoo/enterprise#48310
Signed-off-by: Sofie Gvaladze (sgv) <sgv@odoo.com>
Yash Vaishnav
96f7738439