Add Couchbase provider

[shyam-cb]

This PR will add support for airflow couchbase provider.

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contributors' Guide (https://github.com/apache/airflow/blob/main/contributing-docs/README.rst)
Here are some useful points:

• Pay attention to the quality of your code (ruff, mypy and type annotations). Our pre-commits will help you with that.
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[vincbeck]

There is a process to add a provider to Airflow, see the process here

[shyam-cb]

@vincbeck I have created discussion thread https://lists.apache.org/thread/ff0r9ndbkrj6kyr5o8rpghrvg8n1c0c9