✨(entitlements) add Entitlements backend with Deploy Center support (#31)

This checks if the user has access to the app and can create calendars.

.github/workflows/calendars.yml

@@ -9,32 +9,6 @@ on:
       - "*"
 
 jobs:
-  check-changelog:
-    runs-on: ubuntu-latest
-    if: |
-      contains(github.event.pull_request.labels.*.name, 'noChangeLog') == false &&
-      github.event_name == 'pull_request'
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-        with:
-          fetch-depth: 50
-      - name: Check that the CHANGELOG has been modified in the current branch
-        run: git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.event.after }} | grep 'CHANGELOG.md'
-
-  lint-changelog:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v6
-      - name: Check CHANGELOG max line length
-        run: |
-          max_line_length=$(cat CHANGELOG.md | grep -Ev "^\[.*\]: https://github.com" | wc -L)
-          if [ $max_line_length -ge 80 ]; then
-            echo "ERROR: CHANGELOG has lines longer than 80 characters."
-            exit 1
-          fi
-
   lint-back:
     runs-on: ubuntu-latest
     defaults: