Summary

Add ToolProvider support for Java Packager.

Problem

Currently, in order to use Java Packager from the code users need to import some packages (like com.oracle.tools.packager.*) and use it via non-standard API. We can simplify it by adding a ToolProvider support.

Solution

Introduce the ToolProvider support. Add a new class in jdk.packager.internal.Main(JavaPackagerToolProvider) that implements java.util.spi.ToolProvider. Add "provides java.util.spi.ToolProvider with ..." in module-info.java for jdk.packager module.

Specification

The changes for jdk.packager module \ module-info.java:

provides java.util.spi.ToolProvider with jdk.packager.internal.Main.JavaPackagerToolProvider;

The following definition will be added in the module-info.java for jdk.packager:

/**
 * Defines the Java packager tool, javapackager.
 * The javapackager is a tool for generating bundles for self-contained applications.
 * It can be located under the name {@code "javapackager"} using the {@link ToolProvider}, for example:
 * <pre>{@code
 * ToolProvider javaPackager = ToolProvider.findFirst("javapackager").orElseThrow(...);
 * javaPackager.run(...);
 * }</pre>
 */