"include" option opposite to "exclude" in rome config

[himaanshu24]

In a complex multi-level-hierarchy(which may also contain third-party codes) project it is not desirable to lint each and every directory. Giving a pattern at the command level and having an ignore option may not always work.

There should also be a include option as well in the rome config, where we can define a few paths/patterns that we want to actually lint/format.

It will also provide some speed improvement as well since instead of traversing through the 30-40 directory(actual use case) and ignoring it through the pattern, it can simply lint/format only two directories(for example).

#4186

 "files": {
        "ignore": [
        ],
        "include": [ // proposed
        ],
    },