Add since per package

As these things came in new package.

maven-resolver-spi/src/main/java/org/eclipse/aether/spi/connector/transport/http/RFC9457/HttpRFC9457Exception.java

@@ -24,8 +24,6 @@
 
 /**
  * Exception thrown by {@link HttpTransporter} in case of errors.
- *
- * @since 2.0.2
  */
 public class HttpRFC9457Exception extends IOException {
     private final int statusCode;

maven-resolver-spi/src/main/java/org/eclipse/aether/spi/connector/transport/http/RFC9457/package-info.java

@@ -0,0 +1,25 @@
+// CHECKSTYLE_OFF: RegexpHeader
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+/**
+ * SPI classes for RFC 9457 support.
+ *
+ * @since 2.0.2
+ */
+package org.eclipse.aether.spi.connector.transport.http.RFC9457;