QueryError: add displayException

[domenkozar]

When doing initial schema query, that can span for hundreds of lines of SQL.

Currently the SQL is shown as a one line and an error with a character position.

This improves the formatting into:

QueryError!

  Query:
CREATE EXTENSION IF NOT EXISTS pgcrypto;

CREATE OR REPLACE FUNCTION generate_ulid() RETURNS uuid
    AS $$
        SELECT (lpad(to_hex(floor(extract(epoch FROM clock_timestamp()) * 1000)::bigint), 12, '0') || encode(gen_random_bytes(10), 'hex'))::uuid;
    $$ LANGUAGE SQL;

CREATE TABLE account (
  id BIGINT NOT NULL DEFAULT 
);
^ syntax error at or near ")"

  Params: []
  Error: Server error 42601