Relocate launcher classes

Create alternative launcher classes under the package
`org.springframework.boot.loader.launch` and use them in favor
of the previous location.

This update is designed to improve compatibility with future
changes in the loader.

Closes gh-37667

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/launch/JarLauncher.java

@@ -0,0 +1,34 @@
+/*
+ * 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.loader.launch;
+
+/**
+ * Repackaged {@link org.springframework.boot.loader.JarLauncher}.
+ *
+ * @author Phillip Webb
+ * @since 3.2.0
+ */
+public final class JarLauncher {
+
+	private JarLauncher() {
+	}
+
+	public static void main(String[] args) throws Exception {
+		org.springframework.boot.loader.JarLauncher.main(args);
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/launch/PropertiesLauncher.java

@@ -0,0 +1,34 @@
+/*
+ * 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.loader.launch;
+
+/**
+ * Repackaged {@link org.springframework.boot.loader.PropertiesLauncher}.
+ *
+ * @author Phillip Webb
+ * @since 3.2.0
+ */
+public final class PropertiesLauncher {
+
+	private PropertiesLauncher() {
+	}
+
+	public static void main(String[] args) throws Exception {
+		org.springframework.boot.loader.PropertiesLauncher.main(args);
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/launch/WarLauncher.java

@@ -0,0 +1,34 @@
+/*
+ * 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.loader.launch;
+
+/**
+ * Repackaged {@link org.springframework.boot.loader.WarLauncher}.
+ *
+ * @author Phillip Webb
+ * @since 3.2.0
+ */
+public final class WarLauncher {
+
+	private WarLauncher() {
+	}
+
+	public static void main(String[] args) throws Exception {
+		org.springframework.boot.loader.WarLauncher.main(args);
+	}
+
+}

spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/launch/package-info.java

@@ -0,0 +1,23 @@
+/*
+ * 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.
+ */
+
+/**
+ * Repackaged launcher classes.
+ *
+ * @see org.springframework.boot.loader.launch.JarLauncher
+ * @see org.springframework.boot.loader.launch.WarLauncher
+ */
+package org.springframework.boot.loader.launch;