Added support for Jackson 3 serialization

[dickerpulli]

Added new config option for jsonLibrary called jackson3

With this option set the serialization will be done with Jackson 3. This would create slightly changed typescript code as Jackson 3 introduced some changes in default behaviour.

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Breaking change for enum serialization.
Enum serialization changed because update of Jackson 2 also needed. With Jackson 2.16 the enum serialization has changed a bit: Enum constants annotated @JsonProperty("XXX") will be serialized to "XXX" independent of an existing toString method. Prior Jackson versions (< 2.16) prioritized the toString method.