Add JUnit 5 @RepeatedTest demo project

Initial commit of a Maven project demonstrating JUnit 5's @RepeatedTest annotation. Includes example tests for basic repetition, custom display names, metadata injection, lifecycle management, and failure thresholds. Project files include .gitignore, README, pom.xml, and test classes under src/test/java/com/ankurm/tutorials/junit/repeated.

.gitignore

@@ -0,0 +1,27 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*
+
+#IntelliJ IDEA
+.idea/