Add Gradle Lock Plugin

Issue gh-7788

buildSrc/src/main/java/lock/GlobalLockPlugin.java

@@ -0,0 +1,16 @@
+package lock;
+
+import org.gradle.api.Plugin;
+import org.gradle.api.Project;
+
+/**
+ * @author Rob Winch
+ */
+public class GlobalLockPlugin implements Plugin<Project> {
+	@Override
+	public void apply(Project project) {
+		project.getTasks().register("writeLocks", GlobalLockTask.class, writeAll -> {
+			writeAll.setDescription("Writes the locks for all projects");
+		});
+	}
+}