Import sorting via eslint

[elliotbonneville]

Purpose

Implements import sorting via eslint to keep our imports tidy and consistent. Inspired by this conversation.

Note: there's a little bit of eslint noise because I ran eslint . --fix to update all the imports. Can be safely ignored.

Changes

• Adds eslintignore file
• Switches package.json lint script from using next lint to eslint
• Adds the simple-import-sort eslint plugin and configures it

Checklist

• Applicable documentation updated (guides, quickstart, postman collections, tutorial, fidesdemo, database diagram.
• If docs updated (select one):
  • documentation complete, or draft/outline provided (tag docs-team to complete/review on this branch)
  • documentation issue created (tag docs-team to complete issue separately)
• Good unit test/integration test coverage
• This PR contains a DB migration. If checked, the reviewer should confirm with the author that the down_revision correctly references the previous migration before merging
• The Run Unsafe PR Checks label has been applied, and checks have passed, if this PR touches any external services

[allisonking]

hooray, looks great! thanks for doing this!