add: отчет о покрытии тестами

src/main/java/mc/nbt/internal/JacocoExcludeGeneratedReport.java

@@ -0,0 +1,15 @@
+package mc.nbt.internal;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.ElementType.TYPE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Documented
+@Retention(RUNTIME)
+@Target({TYPE, METHOD})
+public @interface JacocoExcludeGeneratedReport {
+}