Add README and improve documentation for basic webserver example

Author: NA-V10

examples/webserver/basic/README.md

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+# Basic Helidon SE WebServer Example
+
+This example demonstrates the simplest possible Helidon SE WebServer application.  
+It shows how to start a server, register routing rules, and return basic responses.
+
+Helidon SE is a lightweight, reactive, microframework for building fast Java microservices.
+This example is an ideal starting point for beginners learning Helidon SE.
+
+---
+
+## 📘 What This Example Demonstrates
+
+### ✔ 1. Starting a Helidon WebServer  
+Shows how to bootstrap the WebServer using:
+
+```java
+WebServer webServer = WebServer.builder(routing).port(8080).build();
+✔ 2. Basic Routing
+
+Demonstrates registering simple GET endpoints such as:
+
+GET /simple-greet
+
+GET /greet/{name}
+
+✔ 3. Working With JSON
+
+Responds with a JSON payload using Helidon’s built-in media support.
+
+✔ 4. Logging Configuration
+
+Shows how logging.properties is used to configure logging behavior.
+
+✔ 5. Integration Testing
+
+The BasicRoutingTest.java file demonstrates:
+
+starting the server programmatically for testing
+
+invoking endpoints
+
+validating response codes and content
+🗂 Project Structure
+basic/
+ ├── pom.xml
+ └── src
+      ├── main
+      │    ├── java/io/helidon/examples/webserver/basic/BasicMain.java
+      │    └── resources/logging.properties
+      └── test
+           └── java/io/helidon/examples/webserver/basic/BasicRoutingTest.java
+
+▶️ How to Run
+
+Run using Maven:
+
+mvn -q exec:java
+
+
+The server will start on:
+
+http://localhost:8080
+
+📡 Available Endpoints
+Method	Path	Description
+GET	/simple-greet	Returns a basic greeting
+GET	/greet/{name}	Returns “Hello {name}!” text
+
+Example:
+
+curl http://localhost:8080/simple-greet
+curl http://localhost:8080/greet/Naveen
+
+🧪 Running Tests
+mvn test
+
+
+The test suite validates:
+
+server startup
+
+routing behavior
+
+responses and status codes
+
+🎯 Why This Example Is Useful
+
+Provides the smallest possible working Helidon WebServer project
+
+Ideal for new users exploring Helidon SE routing, JSON responses, and server startup
+
+Demonstrates best practices for organizing code and tests
+
+Helps contributors understand Helidon’s reactive architecture