Move workflows to .github/workflows

.github/workflows/composer-install.yml

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+name: Run Composer Install
+
+jobs:
+  ComposerInstall:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        operating-system: ['ubuntu-latest']
+        php-versions: ['8.0', '8.1']
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Cache Composer packages
+        id: composer-cache
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-php-${{ matrix.php-versions }}-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-php-${{ matrix.php-versions }}-
+            ${{ runner.os }}-php-
+
+      - name: Composer (PHP ${{ matrix.php-versions }})
+        uses: php-actions/composer@v6
+        with:
+          php_version: ${{ matrix.php-versions }}
+          args: --no-progress --prefer-dist --optimize-autoloader

.github/workflows/compress-images.yml

@@ -1 +0,0 @@
-../../workflows/compress-images.yml

.github/workflows/compress-images.yml

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+# Compress images on demand (workflow_dispatch), and at 11pm every Sunday (schedule).
+# Open a Pull Request if any images can be compressed.
+name: Compress Images on Demand
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '00 23 * * 0'
+jobs:
+  build:
+    name: calibreapp/image-actions
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v2
+      - name: Compress Images
+        id: calibre
+        uses: calibreapp/image-actions@main
+        with:
+          githubToken: ${{ secrets.GITHUB_TOKEN }}
+          compressOnly: true
+      - name: Create New Pull Request If Needed
+        if: steps.calibre.outputs.markdown != ''
+        uses: peter-evans/create-pull-request@v3
+        with:
+          title: Compressed Images Nightly
+          branch-suffix: timestamp
+          commit-message: Compressed Images
+          body: ${{ steps.calibre.outputs.markdown }}

.github/workflows/pr-compress-images.yml

@@ -1 +0,0 @@
-../../workflows/pr-compress-images.yml

.github/workflows/pr-compress-images.yml

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+name: Compress Images
+on:
+  pull_request:
+    # Run Image Actions when JPG, JPEG, PNG or WebP files are added or changed.
+    # See https://help.github.com/en/actions/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions#onpushpull_requestpaths for reference.
+    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@v2
+
+      - name: Compress Images
+        uses: calibreapp/image-actions@main
+        with:
+          # The `GITHUB_TOKEN` is automatically generated by GitHub and scoped only to the repository that is currently running the action. By default, the action can’t update Pull Requests initiated from forked repositories.
+          # See https://docs.github.com/en/actions/reference/authentication-in-a-workflow and https://help.github.com/en/articles/virtual-environments-for-github-actions#token-permissions
+          githubToken: ${{ secrets.GITHUB_TOKEN }}