box: support space and index names in IPROTO requests

Add support for accepting IPROTO requests with space or index name instead
of identifier (name is preferred over identifier to disambiguate missing
identifiers from zero identifiers): mark space identifier request
key as present upon encountering space name, and delay resolution of
identifier until request gets to transaction thread.

Add support for sending DML requests from net.box connection objects with
disabled schema fetching by manually specifying space or index name or
identifier: when schema fetching is disabled, the space and index tables of
connections return wrapper tables that store necessary context (space or
index name or identifier, determined by type, connection object and space
for indexes) for performing requests. The space and index tables cache the
wrapper table they return.

Closes #8146

@TarantoolBot document
Title: Space and index name in IPROTO requests

Refer to design document for details:
https://www.notion.so/tarantool/Schemafull-IPROTO-cc315ad6bdd641dea66ad854992d8cbf?pvs=4#f4d4b3fa2b3646f1949319866428b6c0