without mysql test environment, use in memory mysql(DoltDB) as default
  test-dsn, soar can give index advice without mysql instance.

  in memory mysql(DoltDB) will listen a random port bind with localhost,
  and distroyed automatically when soar quit.

Co-authored-by: Nshihuixing <shihuixing@jd.com>

  https://github.com/XiaoMi/soar/issues/98

  -report-type tables will give SQL affect tables info

* add test case  and notes

* vendor update

* use `tput setaf/srg0` set color in Makefile

* fix loadExternalResource fail cause panic

  compatibly with old version(<0.10.0)

  bit type not config as int, when two columns compare will
  give ARG.003 suggestion.

  fix #154, #157 by the way

  go test ./... -update

  1. update vitess dependency
  2. explain database prefix check

  1. fix -config arg parse bug
  2. code & comment lint