Add module locator API

.bach/src/run.bach/run/Prepare.java

@@ -0,0 +1,7 @@
+package run;
+
+class Prepare {
+  public static void main(String... args) {
+    Project.ofCurrentWorkingDirectory().prepare();
+  }
+}

.bach/src/run.bach/run/Project.java

@@ -1,8 +1,8 @@
 package run;
 
-import java.lang.module.ModuleFinder;
 import java.util.Optional;
-import run.bach.ModuleFinders;
+
+import run.bach.ModuleLocator;
 import run.bach.ToolCall;
 import run.bach.ToolRunner;
 import run.bach.workflow.Builder;
@@ -34,10 +34,10 @@ static Project ofCurrentWorkingDirectory() {
             .withModule("src/test.bach", "src/test.bach/test/java/module-info.java")
             .withModule("src/test.junit", "src/test.junit/test/java/module-info.java");
     var libraries =
-        ModuleFinder.compose(
-            ModuleFinders.ofProperties(JUnit.MODULES),
-            ModuleFinders.ofProperties(
-                "org.junitpioneer=https://repo.maven.apache.org/maven2/org/junit-pioneer/junit-pioneer/2.2.0/junit-pioneer-2.2.0.jar#SIZE=191032"));
+        ModuleLocator.compose(
+            JUnit.modules(),
+            ModuleLocator.of("org.junitpioneer","pkg:maven/org.junit-pioneer/junit-pioneer@2.2.0")
+            );
     var structure = new Structure(basics, new Spaces(main, test), libraries);
     var runner = ToolRunner.ofSystem();
     return new Project(verbose, new Workflow(folders, structure, runner));
@@ -52,7 +52,6 @@ public void printStatus() {
     System.out.println(structure.toNameAndVersion());
     System.out.println(structure.basics());
     structure.spaces().forEach(System.out::println);
-    structure.libraries().findAll().stream().sorted().forEach(System.out::println);
     System.out.println(workflow.folders());
     System.out.println(workflow.runner());
   }

.bach/src/run.bach/run/demo/ModuleResolverDemo.java

@@ -4,18 +4,18 @@
 import java.nio.file.Path;
 
 import jdk.jfr.consumer.RecordingStream;
-import run.bach.ModuleFinders;
+import run.bach.ModuleLocator;
 import run.bach.ModuleResolver;
 import run.bach.ToolFinder;
+import run.info.bach.JavaFX;
 import run.info.org.junit.JUnit;
 
 public class ModuleResolverDemo {
   public static void main(String... args) throws Exception {
-    var libraries = ModuleFinder.compose(ModuleFinders.ofProperties(JUnit.MODULES));
-
-    try (var reader = libraries.find("org.junit.jupiter").orElseThrow().open()) {
-      reader.list().forEach(System.out::println);
-    }
+    var libraries = ModuleLocator.compose(
+            JUnit.modules(),
+            JavaFX.version("22.0.1")
+    );
 
     var lib = Path.of("lib");
     try (var recording = new RecordingStream()) {