Support alter materialized table related syntaxes: suspend, resume, refresh, set and reset

// suspend
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name SUSPEND

// resume
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name RESUME
 
[WITH('key1' = 'val1', 'key2' = 'val2')]

// refresh
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name REFRESH
 
[PARTITION (key1=val1, key2=val2, ...)]

// set freshness
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name 
 
  SET FRESHNESS = INTERVAL '<num>' { SECOND | MINUTE | HOUR | DAY }

// set refresh mode

ALTER MATERIALIZED TABLE  [catalog_name.][db_name.]table_name 
 
  SET REFRESH_MODE = { FULL | CONTINUOUS }

// set options
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name  SET ('key' = 'val');

// reset options
ALTER MATERIALIZED TABLE [catalog_name.][db_name.]table_name RESET ('key');