chore: add import/newline-after-import lint rule

packages/cli/config/eslint.backend.js

@@ -36,6 +36,7 @@ module.exports = {
   rules: {
     'no-console': 0, // Permitted in console programs
     'new-cap': ['error', { capIsNew: false }], // Because Express constructs things e.g. like 'const r = express.Router()'
+    'import/newline-after-import': 'error',
     'import/no-duplicates': 'warn',
     'import/no-extraneous-dependencies': [
       'error',

packages/cli/config/eslint.js

@@ -41,6 +41,7 @@ module.exports = {
   },
   ignorePatterns: ['.eslintrc.js', '**/dist/**'],
   rules: {
+    'import/newline-after-import': 'error',
     'import/no-duplicates': 'warn',
     'import/no-extraneous-dependencies': [
       'error',