Add docummentation

README.md

docs/docs/api-catalog-entity-management.md

docs/docs/api-catalog-property-discovery.md

docs/docs/api-catalog-source-management.md

docs/docs/api-catalog-timeseries-management.md

docs/docs/api-catalog-timeseries.md

docs/docs/api-catalog.md

docs/docs/architecture-comprehensive.md

docs/docs/architecture-entity-management.md

docs/docs/architecture-high-level.md

docs/docs/architecture-infrastructure-azure.md

docs/docs/architecture-property-management.md

docs/docs/architecture-source-management.md

docs/docs/architecture-timeseries-consumption.md

docs/docs/architecture-timeseries-csv-ingestion-workflow.md

docs/docs/architecture-timeseries-ingestion.md

docs/docs/img/ddms.png

docs/docs/img/osdu-pddms-architecture-comprehensive.png

docs/docs/img/osdu-pddms-architecture-entity-management.png

docs/docs/img/osdu-pddms-architecture-high-level.png