[feature] support CHECK TABLE Statement

[hustjieke]

MySQL 8.0 syntax:

CHECK TABLE tbl_name [, tbl_name] ... [option] ...

option: {
    FOR UPGRADE
  | QUICK
  | FAST
  | MEDIUM
  | EXTENDED
  | CHANGED
}

Actually, the key word "TABLE" should be "TABLE | TABLES", so radondb will support syntax next:

CHECK {TABLE | TABLES} tbl_name [, tbl_name] ... [option] ...

option: {
    FOR UPGRADE
  | QUICK
  | FAST
  | MEDIUM
  | EXTENDED
  | CHANGED
}