ng-formly - api - allow change of order by in the template options

[lucienbertin]

it would be nice to be able to change the default order by when using api-select via formly because

• not all apis support orderby=name,asc (and it makes me sad)
• for some things, a different order by is more pertinent (no i dont have an example)

[lucienbertin]

the html to modify is here

https://github.com/LuccaSA/lucca-front/blob/rc/packages/ng/libraries/formly/src/lib/types/api.html

and its contrpoller is herre

https://github.com/LuccaSA/lucca-front/blob/rc/packages/ng/libraries/formly/src/lib/types/api.ts