linter: warn unmatched rule names

[Boshen]

Given

  "rules": {
    "for-direction": "error",
    "no-async-promise-executor": "error",
    "no-caller": "error",
    "no-case-declarations": "error",
    "no-class-assign": "error",
    "no-compare-neg-zero": "error",
...

I don't know which rule is applied or not, we should warn the ones that are incorrect.

[pumano]

also got that problem that some rules not applied but exist in config, that warnings helps a lot!