Consider modifying config inclusion lists

[JoshuaKGoldberg]

🚀 Feature Request

Forking conversation from https://github.com/typescript-eslint/tslint-to-eslint-config/issues/738#issuecomment-706321235:

Also the error message for the error shown here typescript-eslint/typescript-eslint#967 can be fixed with this and the combination of fixing the includes from

"include": [
    "/src"
]

to

"include": [
    "**/src/**/*.ts"
]

If that helps any I just wanted to state the things I had to do to update this project to work with this project. Thanks for the help it looks like things are working now.

Existing Behavior

Include lists are not modified in any way.

Change Proposal

Perhaps they should be, per the linked issue? If so, should it be always on? Opt-in with a flag? Opt-out with a flag?

Investigation required!