chore: remove eslint-plugin-turbo and related configurations

- Eliminated `eslint-plugin-turbo` from `eslint.config.mjs`, `package.json`, and `package-lock.json`.
- Removed associated rules and environment variable checks.

Author: SimonLoir

eslint.config.mjs

@@ -1,21 +1,12 @@
 import js from '@eslint/js';
 import eslintConfigPrettier from 'eslint-config-prettier';
-import turboPlugin from 'eslint-plugin-turbo';
 import sonarjs from 'eslint-plugin-sonarjs';
 import tseslint from 'typescript-eslint';
 
 const eslintConfig = [
     js.configs.recommended,
     eslintConfigPrettier,
     ...tseslint.configs.recommended,
-    {
-        plugins: {
-            turbo: turboPlugin,
-        },
-        rules: {
-            'turbo/no-undeclared-env-vars': 'off',
-        },
-    },
     {
         plugins: { sonarjs },
         rules: {

package-lock.json

@@ -44,7 +44,6 @@
         "eslint": "^9.39.4",
         "eslint-config-prettier": "^9.1.2",
         "eslint-plugin-sonarjs": "^3.0.7",
-        "eslint-plugin-turbo": "^2.8.15",
         "node-schematron": "^2.1.0",
         "prettier": "^3.8.1",
         "tsup": "^8.5.1",