add support for feature-collection indexing

docs/tutorial/IndexerService.md

...ava/org/opengroup/osdu/indexer/model/geojson/Feature.java

...engroup/osdu/indexer/model/geojson/FeatureCollection.java

...g/opengroup/osdu/indexer/model/geojson/GeoJsonObject.java

...va/org/opengroup/osdu/indexer/model/geojson/Geometry.java

...ngroup/osdu/indexer/model/geojson/GeometryCollection.java

.../org/opengroup/osdu/indexer/model/geojson/LineString.java

...opengroup/osdu/indexer/model/geojson/MultiLineString.java

.../org/opengroup/osdu/indexer/model/geojson/MultiPoint.java

...rg/opengroup/osdu/indexer/model/geojson/MultiPolygon.java

.../java/org/opengroup/osdu/indexer/model/geojson/Point.java

...ava/org/opengroup/osdu/indexer/model/geojson/Polygon.java

...va/org/opengroup/osdu/indexer/model/geojson/Position.java

...er/model/geojson/jackson/FeatureCollectionSerializer.java

...u/indexer/model/geojson/jackson/PositionDeserializer.java

...sdu/indexer/model/geojson/jackson/PositionSerializer.java

...up/osdu/indexer/schema/converter/PropertiesProcessor.java

...ema/converter/config/SchemaConverterPropertiesConfig.java

...ava/org/opengroup/osdu/indexer/schema/converter/readme.md

...oup/osdu/indexer/service/AttributeParsingServiceImpl.java