Initial documentation upload

.github/workflows/pages.yml

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+name: Deploy Documentation
+on:
+  push:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  GitHubPages:
+    name: GitHub Pages
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload Artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: 'docs/'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.phpdoc/guide/index.rst

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+Documentation
+#############
+
+.. meta::
+    :layout: landingpage
+
+.. toctree::
+    :hidden:
+    :titlesonly:
+
+    installation/index

.phpdoc/guide/installation/index.rst

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+Installation
+############
+
+.. toctree::
+    :maxdepth: 3
+
+    test

.phpdoc/guide/installation/test.rst

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+Test
+####
+
+Heading 1
+=========
+
+Heading 2
+---------
+
+Heading 3
+^^^^^^^^^
+
+Heading 4
+"""""""""