Propose Update With Raw Dictionary

[FerdinaKusumah]

1. Simplify nested if else in swagger.py
2. Add default value in swagger.py
3. Adding default value for consumes in doc.py
4. Propose to update with dictionary value, actually i'm just lookup with current value and adding some changes so it can be match with current code.

my propose update will be like this

@app.route("/users")
@doc.summary("Api that return all users")
@doc.tag("users")
@doc.consumes(doc.Dictionary(fields={"id": doc.Integer(),
                                     "age": doc.Integer(),
                                     "address": doc.String(),
                                     "name": doc.String(),
                                     "details": doc.Dictionary(fields={
                                         "example": doc.String()
                                     }),
                                     }), location="body")
@doc.response(401, {"message": str}, description="Unauthorized")
@doc.response(402, {"message": str}, description="Unauthorized")
async def users(request):
    return json({"hello": "world"})

So it will display object in swagger body, this is an example when i'm test