OpenSearch function support

[dai-chen]

Is your feature request related to a problem? Please describe.
Currently both SQL (new engine) and PPL doesn't support any OpenSearch functions. We should prioritize this, especially the most common full text search and aggregate functions.

Here are the feature requests from community:

1. PPL stats did not support percentile function opendistro-for-elasticsearch/sql#1093: Percentile function support in PPL stats
2. Geo function in aggregate query throws exception opendistro-for-elasticsearch/sql#1075: Geo function support in SQL
3. Add Elasticsearch GEO_POINT support in New Query Engine. opendistro-for-elasticsearch/sql#878: Geo point support
4. How to use group by date_histogram(field='timestamp','interval'='1m') in latest version? opendistro-for-elasticsearch/sql#530: Histogram
5. Geopoint type is not supported in JDBC and raw formats opendistro-for-elasticsearch/sql#313: Geo point support

Geo point: opendistro-for-elasticsearch/sql#1064
Meta fields: opendistro-for-elasticsearch/sql#1038
Aggregate params: opendistro-for-elasticsearch/sql#615
Array data: opendistro-for-elasticsearch/sql#618

Describe the solution you'd like
Expose OpenSearch functions in SQL/PPL.

Describe alternatives you've considered
N/A

Additional context
Add any other context or screenshots about the feature request here.

[dai-chen]

Issues related to meta field:

• Support for _routing field in SQL queries #339
• [BUG] _id is not available in where condition #639