change priority for body params

[deniskorbakov]

we need to add logic so that if the #[BodyParam] attribute is present, the values from it will be substituted and not from the library's auto-generation

this should work as follows:

if the user has not added #[Bodyparam] then we output autogeneration

if the user has added #[Bodyparam] then we must change this particular field (there should be no complete rewriting)

also we must take into account that the field in #[Bodyparam] may not be in the Data class and then we add it to the existing fields in the documentation