Fix catalog name missing in Flint index name

[dai-chen]

Description

1. Add indexName and tableName rule in Flint grammar for PPL plugin convenience.
2. Use Spark util methods to parse and qualify table identifier.

TODO

1. [BUG] Find correct catalog name in query rewriter #54
2. Try to add IT with FlintDelegatingSessionCatalog in Spark application module

Examples:

Default Catalog Name (spark_catalog)

CREATE INDEX test ON stream.lineitem_tiny (l_shipdate);

GET flint_spark_catalog_stream_lineitem_tiny_test_index/_mapping
{
  "flint_spark_catalog_stream_lineitem_tiny_test_index": {
    "mappings": {
      "_meta": {
        "name": "test",
        "options": {},
        "source": "spark_catalog.stream.lineitem_tiny",
        "kind": "covering",
        "indexedColumns": [
          {
            "columnType": "date",
            "columnName": "l_shipdate"
          }
        ]
      },
      "properties": {
        "l_shipdate": {
          "type": "date",
          "format": "strict_date"
        }
      }
    }
  }
}

Custom Catalog Name (myglue)

spark-sql ... \
  --conf spark.sql.defaultCatalog=myglue \
  --conf spark.sql.catalog.myglue=org.opensearch.sql.FlintDelegatingSessionCatalog

spark-sql> CREATE INDEX test ON stream.lineitem_tiny (l_shipdate) WITH (auto_refresh=true);

GET flint_myglue_stream_lineitem_tiny_test_index/_search
{
    ...
    "hits": [
      {
        "_index": "flint_myglue_stream_lineitem_tiny_test_index",
        "_id": "Bx4R44oBWdGHpYUCRVK4",
        "_score": 1,
        "_source": {
          "l_shipdate": "1997-08-16"
        }
      },
      {
        "_index": "flint_myglue_stream_lineitem_tiny_test_index",
        "_id": "CR4R44oBWdGHpYUCRVK4",
        "_score": 1,
        "_source": {
          "l_shipdate": "1997-08-16"
        }
      },

spark-sql> DROP INDEX test ON myglue.stream.lineitem_tiny;

Issues Resolved

#43

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