initial converter implementation

...u/indexer/schema/converter/SchemaToStorageFormatImpl.java

...pengroup/osdu/indexer/schema/converter/dto/AllOfItem.java

...engroup/osdu/indexer/schema/converter/dto/Definition.java

...ngroup/osdu/indexer/schema/converter/dto/Definitions.java

...rg/opengroup/osdu/indexer/schema/converter/dto/Items.java

...engroup/osdu/indexer/schema/converter/dto/Properties.java

...oup/osdu/indexer/schema/converter/dto/PropertiesData.java

...engroup/osdu/indexer/schema/converter/dto/SchemaRoot.java

...group/osdu/indexer/schema/converter/dto/TypeProperty.java

...dexer/schema/converter/SchemaToStorageFormatImplTest.java

...er-core/src/test/resources/converter/first/de-schema.json

indexer-core/src/test/resources/converter/first/schema.json

...src/test/resources/converter/wks/de-slb_wke_wellbore.json

...re/src/test/resources/converter/wks/slb_wke_wellbore.json