Supports array arguments in prepared statements

[ritalin]

Description

This PR implements in supporting an array arguments in the prepared statements (issue #447).

Usage

You can pass Javascript's array as argument for query / send method of AsyncPreparedStatement.

const stmt = await conn.prepare(`SELECT * FROM range(1, ?::int) t(id) WHERE id = ANY(?)`);
const result = await stmt.query(100, [2, 3, 5, 7, 11]); 

query / send method of PreparedStatement can also apply similarly.