Add output parameters for the tool path and version

This allows calling the action multiple times in the
same job and retrieving the path and/or version in
other steps.

Fixes #65

src/installer.ts

@@ -90,6 +90,8 @@ export async function getJava(
   core.exportVariable('JAVA_HOME', toolPath);
   core.exportVariable(extendedJavaHome, toolPath);
   core.addPath(path.join(toolPath, 'bin'));
+  core.setOutput('path', toolPath);
+  core.setOutput('version', version);
 }
 
 function getCacheVersionString(version: string) {