Selenium-testing-library

- Fix bug on iOS where WebDriverException is raised instead of JavascriptException

- Add helper functions for missing selenium locators (`id`, `name`, `tag_name`, `link_text`, `partial_link_text`, `class_name`)
- Make timeout and frequency keyword only arguments

- Add `typing-extensions` to the requirements
- README improvements

- Additional parameters `selector`, `ignore` have been added to the Text Locator and screen functions
- Additional parameter `selector` has been added to the LabelText Locator and screen functions
- Additional parameters `hidden`, `description`, `selected`, and others have been added to the Role Locator and screen functions
- `exact` and other parameters for Locators and and screen functions are now keyword only arguments
- `*_by_placeholder_text` screen functions' first parameter was renamed from `value` to `text`
- `*_by_alt_text` screen functions' first parameter was renamed from `value` to `text`
- `*_by_alt_text` screen functions' first parameter was renamed from `value` to `text`
- `*_by_title` screen functions' first parameter was renamed from `value` to `title`
- `*_by_test_id` screen functions' first parameter was renamed from `value` to `text`

This should be the last pre-release and there should be no more breaking changes like this anymore. 🤞

- Fix packaging issue

- Use [testing-library/dom](https://www.npmjs.com/package/testing-library/dom) under the hood for all Testing Library queries. (This resolves [Issue #10](https://github.com/anze3db/selenium-testing-library/issues/10))
- Remove `find_elements`, `_exact_or_not`, `_escape_selector` functions from all `Locator` classes (these were not indended to be public API).
- Dependency updates