babelfish-for-postgresql / babelfish_extensions / 9591191861

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Add support to show ANTLR Batch parsing time along with other explain information (#2647)

This commit adds support to show ANTLR parsing time with EXPLAIN info. With this change, query plan would look like following:
```
1> select 1 + 1
2> select 'abc' + 'def'
3> go

-----------
          2

(1 rows affected)
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Query Text: select 1 + 1
Result  (cost=0.00..0.01 rows=1 width=4) (actual time=0.002..0.002 rows=1 loops=1)
Planning Time: 0.389 ms
Execution Time: 0.057 ms

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
abcdef

(1 rows affected)
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Query Text: select 'abc' + 'def'
Result  (cost=0.00..0.01 rows=1 width=32) (actual time=0.025..0.026 rows=1 loops=1)
Planning Time: 0.219 ms
Execution Time: 0.083 ms

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Babelfish T-SQL Batch Parsing Time: 103.177 ms
```

Task: BABEL-3650
Signed-off-by: Dipesh Dhameliya <dddhamel@amazon.com>

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