this adds very rudimentary documentation for TLQ so that it at least
doesn't go unmentioned. however, there are many more details which
should be mentioned. this should then be done with #430.
more information can be found in the [Elasticsearch TLQ
Documentation][ESTLQ]. i'm not 100% sure whether this was under the
Apache 2.0 license in 7.10 (the repo states that everything is Apache
2.0 unless explicitly stated otherwise in the file and the documentation
files don't seem to include any other license?) and thus didn't simply
take over the documentation from there (which would of course be the
easiest and most complete way of doing it).
also i'm not sure (and didn't find this information anywhere) whether
the test data actually exists and the queries can be run against the
test data? in that case the provided example either needs to be adapted
to the existing test data or the test data needs to be extended
accordingly (i doubt that an index `play-assignments` already exists?).
due to this the example has also not been tested.
Signed-off-by: Ralph Ursprung <Ralph.Ursprung@avaloq.com>
[ESTLQ]: https://www.elastic.co/guide/en/elasticsearch/reference/7.10/query-dsl-terms-query.html#query-dsl-terms-lookup