Import delta-connectors#559 Flink SQL documentationi

Closes #1866
Author: Scott Sandre <scott.sandre@databricks.com>
Date:   Mon Jun 26 11:02:39 2023 -0700

    update version from 0.7.0 to 2.5.0

commit ed7304b
Author: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>
Date:   Wed Apr 26 13:33:38 2023 +0200

    - Adding information about configuring Flink to work with Hive Cluster.

    Signed-off-by: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>

commit 9c7fde5
Author: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>
Date:   Wed Apr 19 19:21:53 2023 +0200

    - adding SQL doc #2

    Signed-off-by: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>

commit f382819
Author: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>
Date:   Fri Apr 14 12:39:44 2023 +0200

    - adding SQL doc.

    Signed-off-by: Krzysztof Chmielewski <krzysiek.chmielewski@gmail.com>