Move dynamic mapping parameter configuration to @Document and @Field

[xhaggi]

At the moment you have to add a separate annotation @DynamicMapping to the entity or fields of type Object and Nested to configure the dynamic mapping parameter. This seems a bit too complicated to me, since the other mapping parameters like ignore_above or doc_values are part of the @Field annotation. We should add dynamic as part of the @Document and @Field annotation, deprecate the old implementation and switch to the new one.