Add Support for SASL/SCRAM Authentication in README

[dyeaster]

Add Support for SASL/SCRAM Authentication in README

Description

This pull request adds detailed instructions to the README for configuring and running Kafdrop with a Kafka cluster that has SASL/SCRAM authentication enabled. The changes include:

• Instructions for creating a kafka.properties file with the necessary SASL/SCRAM configuration.
• A command to run Kafdrop with the JAR file and the kafka.properties file.

Changes

• Added a section in the README titled "Running from JAR with SASL/SCRAM Authentication".
• Provided a sample kafka.properties file with the required configuration.
• Included a command to start Kafdrop with the JAR file and the kafka.properties file.

Testing

• Tested the configuration and command locally to ensure Kafdrop connects successfully to a Kafka cluster with SASL/SCRAM authentication.

Example

Create kafka.properties file
echo "sasl.mechanism=SCRAM-SHA-256 security.protocol=SASL_PLAINTEXT sasl.jaas.config=org.apache.kafka.common.security.scram.ScramLoginModule required username="your_username" password="your_password";" > kafka.properties
Run Kafdrop with the JAR file
java --add-opens=java.base/sun.nio.ch=ALL-UNNAMED -Dkafka.properties.file=kafka.properties -jar target/kafdrop-<version>.jar --kafka.brokerConnect=host:port,host:port

Conclusion

These changes will help users who are working with Kafka clusters that have SASL/SCRAM authentication enabled to configure and run Kafdrop more easily.

Please review and let me know if any further changes are needed.

Thank you

[Bert-R]

Thanks for the contribution!
I've added a few comments to make the new example align more closely with the existing ones.

[Bert-R]

You marked all comments as revolved and requested a new review but forgot to push your update

[Bert-R]

Looks good now. Thanks!