Web console: enable copy data as inline SQL (via VALUES)

[vogievetsky]

This PR let's you copy the results of a query as a DruidSQL statement.

Produces:

SELECT
  CAST("c1" AS VARCHAR) AS "channel",
  CAST("c2" AS VARCHAR) AS "cityName",
  DECODE_BASE64_COMPLEX('thetaSketch', "c3") AS "user_theta"
FROM (
  VALUES
  ('ca', NULL, 'AQMDAAA6zJOcUskA1pEMGA=='),
  ('de', NULL, 'AQMDAAA6zJP43ITYexvoEw=='),
  ('de', NULL, 'AQMDAAA6zJNtue8WOvrJdA=='),
  ('en', NULL, 'AQMDAAA6zJMruSUUqmzufg=='),
  ('en', NULL, 'AQMDAAA6zJM6dC5sW2sTEg=='),
  ('en', NULL, 'AQMDAAA6zJM6dC5sW2sTEg=='),
  ('en', NULL, 'AQMDAAA6zJPqjEoIBIGtDw=='),
  ('en', 'Caulfield', 'AQMDAAA6zJOOtGipKE6KIA=='),
  ('fa', NULL, 'AQMDAAA6zJM8nxZkoGPlLw=='),
  ('vi', NULL, 'AQMDAAA6zJMk4ZadSFqHJw==')
) AS "t" ("c1", "c2", "c3")

This includes a hack around #16456