Check Java Compilation Before Verification

This approach is not ideal since a compilation error in a single file causes the whole verification to be skipped for the whole directory.

Author: rcosta358

liquidjava-verifier/src/main/java/liquidjava/api/CommandLineLauncher.java

@@ -54,7 +54,12 @@ public static void launch(String... paths) {
         }
         launcher.getEnvironment().setNoClasspath(true);
         launcher.getEnvironment().setComplianceLevel(8);
-        launcher.run();
+
+        boolean buildSuccess = launcher.getModelBuilder().build();
+        if (!buildSuccess) {
+            diagnostics.add(new CustomError("Java compilation error detected. Skipping verification."));
+            return;
+        }
 
         final Factory factory = launcher.getFactory();
         final ProcessingManager processingManager = new QueueProcessingManager(factory);