Bump eslint from 8.57.0 to 9.8.0 in /src/TodoApp (#20)

* Bump eslint from 8.57.0 to 9.8.0 in /src/TodoApp

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.0 to 9.8.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.57.0...v9.8.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

* Migrate ESLint configuration

ESLint no longer supports configuration in `package.json`.

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: martincostello <[email protected]>

Author: dependabot[bot]

src/TodoApp/eslint.config.js

@@ -0,0 +1,78 @@
+import stylistic from "@stylistic/eslint-plugin";
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import jest from "eslint-plugin-jest";
+import globals from "globals";
+import tsParser from "@typescript-eslint/parser";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [...compat.extends("prettier"), {
+    files: ['**/*.cjs', '**/*.js', '**/*.ts'],
+    ignores: [
+        'bin/*',
+        'coverage/*',
+        'node_modules/*',
+        'obj/*',
+        'wwwroot/*'
+    ],
+    plugins: {
+        "@stylistic": stylistic,
+        "@typescript-eslint": typescriptEslint,
+        jest,
+    },
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+            ...jest.environments.globals.globals,
+            ...globals.node,
+        },
+        parser: tsParser,
+        ecmaVersion: 5,
+        sourceType: "module",
+        parserOptions: {
+            project: "./tsconfig.json",
+        },
+    },
+    rules: {
+        "@stylistic/indent": "error",
+        "@stylistic/member-delimiter-style": "error",
+        "@stylistic/quotes": ["error", "single"],
+        "@stylistic/semi": ["error", "always"],
+        "@stylistic/type-annotation-spacing": "error",
+        "@typescript-eslint/naming-convention": "error",
+        "@typescript-eslint/prefer-namespace-keyword": "error",
+        "brace-style": ["error", "1tbs"],
+        eqeqeq: ["error", "smart"],
+        "id-blacklist": [
+            "error",
+            "any",
+            "Number",
+            "number",
+            "String",
+            "string",
+            "Boolean",
+            "boolean",
+            "Undefined",
+            "undefined",
+        ],
+        "id-match": "error",
+        "no-eval": "error",
+        "no-redeclare": "error",
+        "no-trailing-spaces": "error",
+        "no-underscore-dangle": "error",
+        "no-var": "error",
+        "spaced-comment": ["error", "always", {
+            markers: ["/"],
+        }],
+    },
+}];