feat: [DataprocMetastore] Added DatabaseType field for the type of ba…

…cking store used (#5162)

* feat: Added DatabaseType field for the type of backing store used
feat: Added AVRO DatabaseDumpSpec for importing and exporting Avro files
feat: Added additional endTime field for MetadataImports
feat: Added RESTORING status on Backups
feat: Added support to record the services that are restoring the backup
feat: Added configuration for Dataplex integration
feat: Added support for IAM management for metadata resources
feat: Added AuxiliaryVersionConfig for configuring the auxiliary hive versions during creation or update of the DPMS instance
feat: Added NetworkConfig for exposing the DPMS endpoint in multiple subnetworks using PSC (this skips the need for VPC peering)
feat: Added EncryptionConfig which contains information used to configure the Dataproc Metastore service to encrypt customer data at rest (CMEK)
docs: formatting improvements

PiperOrigin-RevId: 436271267

Source-Link: googleapis/googleapis@463caca

Source-Link: googleapis/googleapis-gen@e1cd573
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