Have bot run prettier after PRs, remove from linter

.github/workflows/ci.yml

@@ -44,6 +44,13 @@ jobs:
         registry-url: https://registry.npmjs.org
     - name: install
       run: yarn install --frozen-lockfile
+    - name: format
+      run: |
+        yarn format
+        if [ -n "`git status -s`" ]; then
+          git commit -am "Format"
+          git push
+        fi
     - name: build
       run: yarn build
     - name: publish alpha