NIAD-3142: Refactor TransformJsonXmlTool #1911

Job	Run time
Spotbugs	1m 6s
Checkstyle	59s
Unit Tests	2m 25s
Integration Tests	9m 7s
End-to-End Testing	3m 47s
Build & Publish Docker Images (service, gp2gp, .)	1m 54s
Build & Publish Docker Images (wiremock, gp2gp-wiremock, .)	49s
Build & Publish Docker Images (mock-mhs-adaptor, gp2gp-mock-mhs, .)	1m 6s
Build & Publish Docker Images (gpcc-mock, gp2gp-gpcc-mock, ./docker/gpcc-mock)	33s
Build & Publish Docker Images (sds-api-mock, gp2gp-sds-api-mock, ./docker/sds-api-mock)	21s
Build & Publish Docker Images (gpc-api-mock, gp2gp-gpc-api-mock, ./docker/gpc-api-mock)	27s
	22m 34s

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