feat(approval-tests): git ignore received.txt files

These files are only present when there are failing tests, but they should never been committed to git

.gitignore

@@ -195,3 +195,6 @@ src/main/resources/config/application-perso.*
 # Gradle Develocity Settings
 ######################
 .mvn/.develocity/develocity-workspace-id
+
+# Approvals testing
+src/test/resources/**/*.received.txt

src/main/java/tech/jhipster/lite/generator/server/javatool/approvaltesting/domain/ApprovalTestingModuleFactory.java

@@ -33,6 +33,10 @@ public JHipsterModule build(JHipsterModuleProperties properties) {
       .files()
         .add(SOURCE.append("test").template("PackageSettings.java"), testDestination.append("PackageSettings.java"))
         .and()
+      .gitIgnore()
+        .comment("Approval Testing")
+        .pattern("src/test/resources/**/*.received.txt")
+        .and()
       .build();
     //@formatter:on
   }

src/test/java/tech/jhipster/lite/generator/server/javatool/approvaltesting/domain/ApprovalTestingModuleFactoryTest.java

@@ -33,6 +33,9 @@ void shouldBuildApprovalTestsModule() {
               <scope>test</scope>
             </dependency>
         """
-      );
+      )
+      .and()
+      .hasFile(".gitignore")
+      .containing("src/test/resources/**/*.received.txt");
   }
 }