New rule: jsx-no-trailing-semicolon

[jkillian]

We had a case in our code where a semicolon was accidentally used at the end of a line of a tsx statement. Since this is almost always unintended, it makes sense to have a lint rule to warn against it. The rule would warn against code like the following:

<div>
  <SomeComponent/>;
</div>

(haven't thought about the rule name that much, so take the title with a grain of salt)

[tomauty]

I was just looking for something like this. Maybe no-errant-characters? Is there an actual use-case for having characters not wrapped in an element in a JSX statement? For RN there is not.

[adidahiya]

Closing due to deprecation timeline #210, let's focus on getting support in eslint