Ignore rawBytes in StringBodyDTO

[jmini]

The serialization of a StringBodyDTO looks like this:

{
      "type" : "STRING",
      "string" : "{\"id\":37,\"username\":\"john.doe\"}",
      "rawBytes" : "eyJpZCI6MzcsInVzZXJuYW1lIjoiam9obi5kb2UifQ==",
      "contentType" : "application/json"
}

To be consistent with the StringBody implementation:

mockserver-neolight/core/src/main/java/software/xdev/mockserver/model/StringBody.java

Lines 100 to 104 in 4fa867a

	@JsonIgnore
	public byte[] getRawBytes()
	{
	return this.rawBytes;
	}

I think it would make sense to ignore the rawBytes attribute in the StringBodyDTO, to have it like this:

{
      "type" : "STRING",
      "string" : "{\"id\":37,\"username\":\"john.doe\"}",
      "contentType" : "application/json"
}

[AB-xdev]

Thank you for the PR.

However I don't quite get the problem or why this is fixed with a @JsonIgnore as there is a custom https://github.com/xdev-software/mockserver-neolight/blob/c8a7cbf0786969788064d32864d2035de8385e3c/core/src/main/java/software/xdev/mockserver/serialization/serializers/body/StringBodyDTOSerializer.java in use...

Could you create an issue that explains this in detail and link it to the PR (using fixes #<IssueId>)?