Leetcode format

Adds Format code button on leetcode to format the code using Prettier code formatter\n\nThis Google chrome extension adds the Format button to the LeetCode code editor. Currently supported programming languages are Java, C++, JavaScript, TypeScript and Dart. Supports LeetCode old and new UI both, including dynamic layout. Release Notes 1.9: * Bug fix with dynamic layout Release Notes 1.8: * Bug fixes Release Notes 1.7: * Bug fixes for new UI * Add hotkey support for old UI as well Release Notes v1.6: * Added hotkey support (CTRL + ALT + F) Release Notes v1.5: * Added support for both old and new UI.