Configurable Props and State interface names

[niik]

We currently use the tslint interface-name rule to enforce a naming convention of all interfaces beginning with the capital letter I and we would very much like to use the react-unused-props-and-state.

Unfortunately, since that only looks at interfaces named Props or State it fails to pick up on our unused fields.

This PR adds an (optional) configuration for the rule which lets consumers pass a regular expression to match the names of their Props and State interfaces. We now use this to pass the following configuration:

"react-unused-props-and-state": [ true,
  {
    "props-interface-regex": "Props$",
    "state-interface-regex": "State$"
  }
],

Which tells the rule to include all interfaces ending in Props or State.

[msftclas]

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[msftclas]

@niik, Thanks for signing the contribution license agreement so quickly! Actual humans will now validate the agreement and then evaluate the PR.

Thanks, MSBOT;

[HamletDRC]

Thanks for the PR. I will definitely merge this, but I won't have time until tomorrow.

[niik]

@HamletDRC No sweat, please let me know if there's anything I can do to help you get this merged

[HamletDRC]

This is available on our "releases" branch now. You can point your npm dependency there if you need the latest files.