Made Tables service interfaces public (#22130)

* Made service interfaces public for Key Vault and Tables impl clients.

* Removed kvErrorStrings.properties files from Key Vault SDKs. Made KeyVaultErrorCodeStrings store the constants that were in the files.

* Added check for null credentials in Key Vault Administration Builders.

* Reverted changes made to KV libraries.

sdk/tables/azure-data-tables/src/main/java/com/azure/data/tables/implementation/AzureTableImplBuilder.java

@@ -18,7 +18,6 @@
 import com.azure.core.util.Configuration;
 import com.azure.core.util.serializer.JacksonAdapter;
 import com.azure.core.util.serializer.SerializerAdapter;
-
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;

sdk/tables/azure-data-tables/src/main/java/com/azure/data/tables/implementation/TablesImpl.java

@@ -39,10 +39,9 @@
 import com.azure.data.tables.implementation.models.TablesQueryResponse;
 import com.azure.data.tables.implementation.models.TablesSetAccessPolicyResponse;
 import com.azure.data.tables.implementation.models.TablesUpdateEntityResponse;
-import reactor.core.publisher.Mono;
-
 import java.util.List;
 import java.util.Map;
+import reactor.core.publisher.Mono;
 
 /** An instance of this class provides access to all the operations defined in Tables. */
 public final class TablesImpl {

sdk/tables/azure-data-tables/src/main/java/com/azure/data/tables/implementation/TransactionalBatchImpl.java

@@ -52,7 +52,7 @@ public TransactionalBatchImpl(AzureTableImpl client, SerializerAdapter transacti
      */
     @Host("{url}")
     @ServiceInterface(name = "AzureTableServices")
-    private interface TransactionalBatchService {
+    public interface TransactionalBatchService {
         @Post("/$batch")
         @ExpectedResponses({202})
         @UnexpectedResponseExceptionType(TableServiceErrorException.class)