Sugggestion: create a remix eslint flat config and upgrade the eslint used in create-remix

[AlexFrazer]

Getting started with remix. When I first created a project, it seemed like it was a version behind on eslint (8 instead of 9)

I was thinking that it might be a bit easier to create a FlatConfig for the remix specific rules, then upgrade the entire create-remix package. The resulting eslint file would be like this:

// eslint.config.ts
import remix from "@remix/eslint";
import js from "@eslintrc/js";
import tseslint from "typescript-eslint";

export default tseslint.config([
  js.configs.recommended,
  tseslint.configs.recommendedTypeChecked,
  remix.configs.recommended
]);

Potentially break it down into some other configs like this:

// eslint.config.ts
import remix from "@remix/eslint";
import js from "@eslintrc/js";
import tseslint from "typescript-eslint";

export default tseslint.config([
  js.configs.recommended,
  tseslint.configs.recommendedTypeChecked,
  {
    files: ["**/*.client.{js,jsx,ts,tsx}"],
    plugins: { remix },
    extends: [remix.configs.client.recommended],
  },
  {
    files: ["**/*.server.{js,jsx,ts,tsx}"],
    plugins: { remix },
    extends: [remix.configs.server.recommended],
  }
]);

I can do the work if someone points me to the code