Merge branch 'use_FF_client_lib' into 'master'

docs/tutorial/IndexerService.md

docs/tutorial/PreviewFeatures.md

...va/org/opengroup/osdu/indexer/cache/FeatureFlagCache.java

...oup/osdu/indexer/service/StorageIndexerPayloadMapper.java

...opengroup/osdu/indexer/util/BooleanFeatureFlagClient.java

...indexer/util/geo/decimator/GeoShapeDecimationSetting.java

...rg/opengroup/osdu/indexer/cache/FeatureFlagCacheTest.java

...osdu/indexer/service/StorageIndexerPayloadMapperTest.java

...group/osdu/indexer/service/mock/PartitionFactoryMock.java

...roup/osdu/indexer/service/mock/PartitionProviderMock.java

...group/osdu/indexer/util/BooleanFeatureFlagClientTest.java