feat(model): add back model structure for moodle feedback

Moodle needs this structure to read the information to show.
What model to finally agree on has to be discussed later

src/main/java/de/hftstuttgart/models/LegacyMoodleResult.java

+package de.hftstuttgart.models;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class LegacyMoodleResult {
+
+    public List<LegacyMoodleTestResult> testResults;
+    public List<LegacyMoodleCompilationError> compilationErrors;
+
+    public static LegacyMoodleResult convertToModdleResult(ModocotResultSummary summary) {
+        LegacyMoodleTestResult tests = new LegacyMoodleTestResult();
+        tests.failureCount = summary.failureCount;
+        tests.testCount = summary.testCount;
+        tests.successfulTests = summary.successes.stream()
+            .map(s -> s.name)
+            .collect(Collectors.toList());
+        tests.testFailures = summary.failures.stream()
+            .map(f -> {
+                LegacyMoodleTestFailure failure = new LegacyMoodleTestFailure();
+                failure.testHeader = f.name;
+                failure.message = f.failureReason;
+                failure.trace = f.stacktrace;
+
+                return failure;
+            })
+            .collect(Collectors.toList());
+
+        List<LegacyMoodleCompilationError> compilationErrors;
+        compilationErrors = summary.compilationErrors.stream()
+            .map(f -> {
+                LegacyMoodleCompilationError cError = new LegacyMoodleCompilationError();
+                cError.javaFileName = f.name;
+                cError.message = f.failureReason;
+                cError.lineNumber = f.lineNumber;
+                cError.columnNumber = f.columnNumber;
+                cError.position = f.position;
+
+                return cError;
+            })
+            .collect(Collectors.toList());
+
+        LegacyMoodleResult result = new LegacyMoodleResult();
+        result.testResults = Collections.singletonList(tests);
+        result.compilationErrors = compilationErrors;
+
+        return result;
+    }
+
+    private static class LegacyMoodleTestResult {
+        public String testName = "UnitTests";
+        public int testCount;
+        public int failureCount;
+        public List<String> successfulTests;
+        public List<LegacyMoodleTestFailure> testFailures;
+    }
+
+    private static class LegacyMoodleTestFailure {
+        public String testHeader;
+        public String message;
+        public String trace;
+    }
+
+    private static class LegacyMoodleCompilationError {
+        public String message;
+        public String javaFileName;
+        public int lineNumber;
+        public int columnNumber;
+        public int position;
+    }
+}