Add ESLint / Prettier config

[adamjarling]

What does this do?

• Creates and wires up the lint command (hooking into NextJS's lint)
  • Uses lint rules from @typescript-eslint/recommended
• Adds prettier as a dev dependency to the project and setup command line utils (prettier and prettier:fix)
• Syncs prettier package to eslint package
• Make linting / typechecking part of Clover's Continuous Integration via lint-staged package. It will run on every git commit.
• Change TypeScript command line util naming to typecheck (previously ts-lint)

How to test?

Create a test file in the project, ie, test.ts and make it intentionally violate rules. For example

let foo;
export const bar: number = "baz";

Save the file, git stage the file and try to create a new commit. You will see the linting run and your commit should be blocked.

# Run Prettier checks
pnpm prettier

# Run Prettier fix on poorly formatted code
pnpm pretter:fix

# Run ESLint
pnpm lint

[mathewjordan]

Absolutely -- let's roll it in. 🚀