Add suggestions for no-exports

[lo1tuma]

Summary

• add suggestion-only support for removable local export forms in test files
• keep export default expressions and re-exports diagnostic-only
• regenerate the rule docs and README for suggestion metadata

Testing

• npm run eslint -- source/rules/no-exports.ts source/rules/no-exports.test.ts
• npm run test:unit -- --grep no-exports
• npm run test:unit:with-coverage
• npm run update:eslint-docs
• npm run lint:eslint-docs
• npm run lint:docs -- documentation/rules/no-exports.md README.md