Rewrite parser for point type

[ChenZhongPu]

Rewrite SQL parser for Point type for comparisonExpression.

To be specific, adding pointWrapper and pointLiteral to make the SQL parser syntax more concise. This would benefit for supporting polygon type later.

[dongx-psu]

The objective of this ticket is to create general geometric objects representation from the perspective of SQL syntax and DataFrame API. I will later on create a new milestone that includes this ticket.