With this commit, instead of `Record.insert()` before setting
relation with records, we can immediately pass record data.
For example:
```js
message.author = { id: 3, type: "partner", name: "Admin" };
thread.messages.add({ id: 10, body: "some-text-content" })
```
This is supported on all relational fields that define a target
model.
To make this work while drastically avoiding cyclic dependencies
in code, whenever data have to be inserted in relation, they are
pre-inserted with essential data, and then they are fully inserted
after being registered in the relation.
closesodoo/odoo#136539
Related: odoo/enterprise#47854
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>
Alexandre Kühn
b526078ae9