Proposal

{
  "rules": {
    "@typescript-eslint/prefer-import-type": ["error"]
  }
}

// your repro code case
import {FooBar} from 'foo-bar';
const foo: FooBar = {foo: 1, bar: 2};

Expected Result
FooBar is only being used as a type, import as 'import type {FooBar}'

Actual Result

Additional Info

Since typescript now supports import type {X} for type only imports that don't get emitted in js, nor do get counted as cyclic imports, it would be nice to have typescript-eslint automatically flag and fix import {T} to import type {T}

If you're willing to accept the suggestion, I'm happy to create a PR and land this