Add intl pre-commit hook and update GHA (#1416)

* Add intl pre-commit hook and update GHA

- add Husky lib
- add pre-commit script
- detect warning on extraction and abort commit
- update deploy staging yml to show message that en.json was modified

* Test if block of message post

- test if the message is posted even when checking a file with no changes

* Add back in full deploy action

* Add back en.json

.github/workflows/deploy_fe_staging.yml

@@ -95,3 +95,16 @@ jobs:
       - name: Printing deployment URLs
         run: |
           echo "Github pages: https://usds.github.io/justice40-tool/$DESTINATION_FOLDER/en"
+      - name: Get changed files using defaults
+        id: changed-files
+        uses: tj-actions/changed-files@v18.1
+      - name: Update PR with message that en.json has been updated
+        uses: mshick/add-pr-comment@v1
+        with:
+          message: |
+            ** 👋  Attention translators!! 👋  **   
+            Copy changes have resulted in a new en.json file. Please translate all other language files.
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          repo-token-user-login: "github-actions[bot]" # The user.login for temporary GitHub tokens
+          allow-repeats: false # This is the default
+        if: contains(steps.changed-files.outputs.modified_files, 'client/src/intl/en.json')