feat(tools): remove eslint-plugin-prettier for prettier (#42438)

* feat: remove eslint-plugin-prettier for prettier

This removes the annoying lint warnings when all that needs to change is
formatting

* fix: use .js lint-staged config to ignore properly

* fix: lint everything if a lot of files are changed

It's faster than making lots of individual linter calls

* chore: apply prettier

* fix: ignore code in curriculum-file-structure

tools/contributor/lib/pr-tasks/close-open.js

@@ -9,7 +9,7 @@ const { Octokit } = require('@octokit/rest');
 const octokit = new Octokit({ auth: secret });
 
 /* closes and reopens an open PR with applicable comment */
-const closeOpen = async number => {
+const closeOpen = async (number) => {
   await octokit.pulls
     .update({
       owner,
@@ -33,7 +33,7 @@ const closeOpen = async number => {
       const msg = 'Closed/Reopened to resolve a specific Travis build failure.';
       await addComment(number, msg);
     })
-    .catch(async err => {
+    .catch(async (err) => {
       // Octokit stores message as a stringified object
       const { errorMg } = JSON.parse(err.message);
       if (