[Feature Request] Add updateOrCreate/firstOrCreate

[vesper8]

Describe the feature

These are some of the most-used eloquent helpers in Laravel, I personally use updateOrCreate a lot and it would be nice to have it in pinia-orm so I don't have to do things like this:

        if (useRepo(Requirement).find(id)) {
          await useRepo(Requirement)
            .whereId(id) //
            .update(this.form);
        } else {
          await useRepo(Requirement).save({
            id: useRepo(Requirement).all().length + 1, //
            ...this.form,
          });
        }

Additional information

• Would you be willing to help implement this feature?

Final checks

• Check existing discussions and issues.

[CodeDredd]

Implemented in #2032 (v2.0.0, pending review):

useRepo(Requirement).updateOrCreate({ id }, form)
const req = useRepo(Requirement).firstOrCreate({ id }, defaults)

Semantics follow Laravel: the first argument matches existing records (every attribute compared strictly), the second holds the values to update / merge on create. Composite primary keys are supported.