fix SetLooger && update filepath

add new heuristic rule RuleColumnNotAllowType COL.018

  compatible with windows file path, regression filepath.Join

  support allow-collates checks

  go test ./... -update

  ref: https://github.com/XiaoMi/soar/pull/147

  Thanks @xiyangxixian

  COL.015 text/blob default value only tobe `NULL`;
  COL.012 text/blob `NOT NULL` CONSTRAINT may be danagerous;

fix #141

fix #89 

fix index advisor give wrong database name, `optimizer_xx` is tempora…

  FULLTEXT INDEX suggestion

update RuleMultiDeleteUpdate content & summary

make RuleForbiddenSyntax more compatible with other companies