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.

RepeatedTest/README.md

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+# JUnit 5 @RepeatedTest Demonstration
+
+This project demonstrates the usage of JUnit 5's `@RepeatedTest` annotation to improve test reliability and handle flaky tests.
+
+## Concepts Covered
+
+The code examples in `src/test/java/com/ankurTutorials/junit/repeated` cover the following concepts:
+
+1.  **Basic Repetition**: Repeating a test a specific number of times.
+    - File: `ReliabilityTest.java`
+2.  **Custom Display Names**: Configuring formatted names for each repetition for better reporting in CI/CD.
+    - File: `CustomNameTest.java`
+3.  **Metadata Injection**: Using `RepetitionInfo` to access the current repetition index and total count within the test.
+    - File: `MetadataTest.java`
+4.  **Lifecycle Management**: Understanding how `@BeforeEach` and `@AfterEach` interact with repeated tests (they run for *each* repetition).
+    - File: `LifecycleTest.java`
+5.  **Failure Thresholds**: Using the `failureThreshold` attribute (JUnit 5.10+) to stop execution early if a certain number of failures occur.
+    - File: `FlakyServiceTest.java`
+
+## Prerequisites
+
+- Java 17 or higher
+- Maven 3.6+
+
+## How to Run
+
+To run all tests, execute the following command in the project root:
+
+```bash
+mvn test
+```
+
+To run a specific test class:
+
+```bash
+mvn -Dtest=BasicUsageTest test
+```