updated react native quick start

[c-arriagada]

Description

• Updated guide so we doesn't pass a config object to the instance of Database in the example but instead we only pass the configuration string.
• Added peer dependencies that need to be installed along with the SQLite Cloud JS driver.
• Formatted sql query so user doesn't have to scroll horizontally to see sample code.
• Updated instructions about how to run the app.

Feature Validation/Bug Reproduction Steps

1. From the website repo, cd docs-website/content/docs and npm run dev-docs-website.
2. Load the localhost link in the browser.

Screenshots & Videos