[HOLD for payment 2023-06-23] Standardize our functional component declaration style via a lint rule

[roryabraham]

Problem

We currently have functional components declared as arrow functions, and others declared as functions. We have standardized this in our code standards, but don't have anything in place to enforce this code style.

Solution

Add a lint rule for it 🙂

[roryabraham]

Reopening this until I:

• Bump the package version in eslint-config-expensify
• Republish the eslint-config-expensify package
• Bump the package version in E/App and run npm run lint -- --fix

[roryabraham]

Big PR to standardize our functional component declaration style is ready for review: #20724