Updating MicroProfile API Tutorial to 7.1 and Adding New Chapters for Umbrella Specs

[Tarun Telang]

Hello MicroProfile Community,

I have started work on updating the official MicroProfile Tutorial
from version 6.1 to 7.1, along with adding three new chapters covering
key MicroProfile umbrella specifications.

The existing chapters are being updated to the following specifications:

- MicroProfile Rest Client 4.0
- MicroProfile OpenAPI 4.1
- MicroProfile Telemetry 2.1

In addition, the following new chapters are being introduced:

- MicroProfile Telemetry 2.1
- MicroProfile Reactive Messaging 3.0
- MicroProfile GraphQL 2.0

A tracking ticket has been created to follow progress and share updates:
https://github.com/microprofile/microprofile-marketing/issues/1104

I would welcome suggestions, feedback, and contributions from the community.

Please feel free to share them on the ticket or reply on the mailing list.
Thank you for your continued support.

Best regards,
Tarun Telang