New Rule: jsx-curly-spacing

[avanderhoorn]

Enforce or disallow spaces inside of curly braces in JSX attributes.

This is basically a copy of https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-curly-spacing.md for tsx pages.

[avanderhoorn]

If it helps:

• Source - https://github.com/yannickcr/eslint-plugin-react/blob/master/lib/rules/jsx-curly-spacing.js
• Tests - https://github.com/yannickcr/eslint-plugin-react/blob/master/tests/lib/rules/jsx-curly-spacing.js