Add support for MongoClient APIs

packages/library-sync/src/commonMain/kotlin/io/realm/kotlin/mongodb/mongo/MongoClient.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2023 Realm Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.realm.kotlin.mongodb.mongo
+
+/**
+ * The remote MongoClient used for working with data in MongoDB remotely via Realm.
+ */
+public interface MongoClient {
+
+	/**
+	 * Gets a [MongoDatabase] instance for the given database name.
+	 *
+	 * @param databaseName the name of the database to retrieve
+	 * @return a `RemoteMongoDatabase` representing the specified database
+	 */
+	public fun getDatabase(databaseName: String): MongoDatabase
+//		osMongoClient.getDatabase(databaseName, codecRegistry),
+//		databaseName
+
+	/**
+	 * Returns the service name for this client.
+	 *
+	 * @return the service name.
+	 */
+	public val serviceName: String
+		// return osMongoClient.getServiceName()
+}