Move tests into correct subdirectories

src/test/java/de/monticore/lang/monticar/emam2wasm/CppStepTest.java → src/test/java/de/monticore/lang/monticar/emam2wasm/cpp/CppStepTest.java

-package de.monticore.lang.monticar.emam2wasm;
+package de.monticore.lang.monticar.emam2wasm.cpp;
 
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.mockito.ArgumentMatchers.any;
@@ -7,9 +7,6 @@ import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import de.monticore.lang.monticar.contract.Precondition.PreconditionViolationException;
-import de.monticore.lang.monticar.emam2wasm.cpp.CppCompiler;
-import de.monticore.lang.monticar.emam2wasm.cpp.CppNameProvider;
-import de.monticore.lang.monticar.emam2wasm.cpp.CppStep;
 import de.monticore.symboltable.Symbol;
 import java.nio.file.Path;
 import java.nio.file.Paths;

src/test/java/de/monticore/lang/monticar/emam2wasm/EmamModelNameProviderTest.java → src/test/java/de/monticore/lang/monticar/emam2wasm/model/EmamModelNameProviderTest.java

-package de.monticore.lang.monticar.emam2wasm;
+package de.monticore.lang.monticar.emam2wasm.model;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
@@ -7,7 +7,6 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 import de.monticore.lang.embeddedmontiarc.embeddedmontiarcmath._parser.EmbeddedMontiArcMathParser;
-import de.monticore.lang.monticar.emam2wasm.model.EmamModelNameProvider;
 import de.monticore.lang.monticar.util.TextFile;
 import java.io.IOException;
 import java.io.Reader;

src/test/java/de/monticore/lang/monticar/emam2wasm/ModelStepTest.java → src/test/java/de/monticore/lang/monticar/emam2wasm/model/ModelStepTest.java

-package de.monticore.lang.monticar.emam2wasm;
+package de.monticore.lang.monticar.emam2wasm.model;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
@@ -7,8 +7,6 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
 import de.monticore.lang.monticar.contract.Precondition.PreconditionViolationException;
-import de.monticore.lang.monticar.emam2wasm.model.ModelNameProvider;
-import de.monticore.lang.monticar.emam2wasm.model.ModelStep;
 import de.monticore.lang.monticar.junit.TemporaryDirectoryExtension;
 import java.nio.file.Path;
 import java.nio.file.Paths;