Introduce ConnectionDetails interface

Add a `ConnectionDetails` tagging interface which will be used
to mark beans that are a source of configuration settings for
connection to a remove service. When such beans are available,
they will take precedence over any connection-related
configuration properties. Configuration properties that are not
related to the connection itself, such as properties that control
the size and behavior of a connection pool, will still used.

See gh-34657

Co-Authored-By: Mortitz Halbritter <mkammerer@vmware.com>
Co-Authored-By: Phillip Webb <pwebb@vmware.com>

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/service/connection/ConnectionDetails.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * 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
+ *
+ *      https://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 org.springframework.boot.autoconfigure.service.connection;
+
+import org.springframework.boot.origin.OriginProvider;
+
+/**
+ * Base interface for types that provide the details required to establish a connection to
+ * a remote service.
+ * <p>
+ * Implementation classes can also implement {@link OriginProvider} in order to provide
+ * origin information.
+ *
+ * @author Moritz Halbritter
+ * @author Andy Wilkinson
+ * @author Phillip Webb
+ * @since 3.1.0
+ */
+public interface ConnectionDetails {
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/service/connection/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2023 the original author or authors.
+ *
+ * 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
+ *
+ *      https://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.
+ */
+
+/**
+ * Support for service connections that affect auto-configuration.
+ */
+package org.springframework.boot.autoconfigure.service.connection;