Rewrite Parcel guide (#36411)

* Rewrite Parcel guide

* update to match latest webpack guide, add images

* eslint-skip

* Apply suggestions from code review

Co-authored-by: Julien Déramond <julien.deramond@orange.com>

* match parcel to webpack, share footer, consistent use of no ;

* Update site/content/docs/5.2/getting-started/parcel.md

Co-authored-by: Julien Déramond <julien.deramond@orange.com>

* edits from code review

* Add custom images

* add image compression action from blog

Co-authored-by: Julien Déramond <julien.deramond@orange.com>

.github/workflows/calibreapp-image-actions.yml

@@ -0,0 +1,24 @@
+name: Compress Images
+
+on:
+  pull_request:
+    paths:
+      - '**.jpg'
+      - '**.jpeg'
+      - '**.png'
+      - '**.webp'
+
+jobs:
+  build:
+    # Only run on Pull Requests within the same repository, and not from forks.
+    if: github.event.pull_request.head.repo.full_name == github.repository
+    name: calibreapp/image-actions
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v3
+
+      - name: Compress Images
+        uses: calibreapp/image-actions@1.1.0
+        with:
+          githubToken: ${{ secrets.GITHUB_TOKEN }}