Add information about connector support levels (#3021)

* Add information about connector support levels

Resolves #3018

Author: patiencedaur

doc/book/connectors.rst

@@ -4,7 +4,16 @@
                             Connectors
 -------------------------------------------------------------------------------
 
-This chapter documents APIs for various programming languages:
+Connectors are APIs that allow using Tarantool with various programming languages.
+
+Connectors can be divided into two groups -- those maintained by the Tarantool team
+and those supported by the community.
+The Tarantool team maintains the :ref:`high-level C API <index_connector_c>`, the :ref:`Go <index_connector_go>`
+and :ref:`Java <index_connector_java>` connectors, and a synchronous :ref:`Python <index_connector_py>` connector.
+All other connectors are community-supported, which means that support for new Tarantool features may be delayed.
+Besides, the Tarantool support team cannot prioritize issues that arise while working through these connectors.
+
+This chapter documents the following connectors:
 
 * :doc:`C++ <connectors/cxx/tntcxx_api>`
 * :ref:`Java <index_connector_java>`

locale/ru/LC_MESSAGES/book/connectors.po

@@ -2,8 +2,27 @@
 msgid "Connectors"
 msgstr "Коннекторы"
 
-msgid "This chapter documents APIs for various programming languages:"
-msgstr "В этой главе описаны API для различных языков программирования:"
+msgid ""
+"Connectors are APIs that allow using Tarantool with various programming languages."
+msgstr "Коннекторы --- это API, позволяющие использовать Tarantool с различными языками программирования."
+
+msgid ""
+"Connectors can be divided into two groups -- those maintained by the Tarantool team "
+"and those supported by the community. "
+"The Tarantool team maintains the :ref:`high-level C API <index_connector_c>`, the :ref:`Go <index_connector_go>` "
+"and :ref:`Java <index_connector_java>` connectors, and a synchronous :ref:`Python <index_connector_py>` connector. "
+"All other connectors are community-supported, which means that support for new Tarantool features may be delayed. "
+"Besides, the Tarantool support team cannot prioritize issues that arise while working through these connectors."
+msgstr ""
+"Команда Tarantool разрабатывает и поддерживает высокоуровневое :ref:`API для языка C <index_connector_c>`, "
+"коннекторы для :ref:`Go <index_connector_go>` и :ref:`Java <index_connector_java>`, "
+"а также синхронный коннектор для :ref:`Python <index_connector_py>`. "
+"Все остальные коннекторы разрабатываются сообществом и не всегда поддерживают функциональные возможности "
+"новых версий Tarantool. Кроме того, команда технической поддержки Tarantool не может уделять "
+"первоочередное внимание проблемам, возникающим при работе с такими коннекторами."
+
+msgid "This chapter documents the following connectors:"
+msgstr "В главе описаны следующие коннекторы:"
 
 msgid ":doc:`C++ <connectors/cxx/tntcxx_api>`"
 msgstr ":doc:`C++ <connectors/cxx/tntcxx_api>`"