feat: update doxygen

* Add Modern Theme
* Update Deployment
* Remove pre-built doxygen files

.github/workflows/docs.yml

@@ -0,0 +1,40 @@
+on:
+  push:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+name: 📄 Setup Documentation
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: 📥 Checkout
+        uses: actions/checkout@v3
+
+      - name: 📋 Install Dependencies
+        run: sudo apt-get install doxygen
+
+      - name: 🔨 Build
+        run: |
+          doxygen docs/Doxyfile
+
+      - name: 🚀 Upload Artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: html
+
+      - name: 📃 Setup Pages
+        uses: actions/configure-pages@v3
+
+      - name: 📦 Deploy
+        id: deployment
+        uses: actions/deploy-pages@v2

.gitmodules

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+[submodule "docs/doxygen-awesome-css"]
+	path = docs/doxygen-awesome-css
+	url = https://github.com/jothepro/doxygen-awesome-css.git

docs/Doxyfile

@@ -0,0 +1,24 @@
+GENERATE_TREEVIEW      = YES
+DISABLE_INDEX 		   = NO
+FULL_SIDEBAR 		   = NO
+HTML_EXTRA_STYLESHEET  = docs/doxygen-awesome-css/doxygen-awesome.css docs/doxygen-awesome-css/doxygen-awesome-sidebar-only-darkmode-toggle.css
+HTML_EXTRA_FILES  	   = docs/doxygen-awesome-css/doxygen-awesome-darkmode-toggle.js
+HTML_COLORSTYLE        = LIGHT
+HTML_HEADER            = docs/header.html
+
+PROJECT_NAME           = ViennaLS
+ALWAYS_DETAILED_SEC    = YES
+INLINE_INHERITED_MEMB  = YES
+MULTILINE_CPP_IS_BRIEF = YES
+EXTRACT_ALL            = YES
+EXTRACT_PACKAGE        = YES
+EXTRACT_STATIC         = YES
+EXTRACT_LOCAL_CLASSES  = NO
+GENERATE_TODOLIST      = NO
+
+RECURSIVE              = YES
+EXAMPLE_RECURSIVE      = YES
+EXCLUDE_PATTERNS       = */build/* */docs/* */Python/* */cmake/* */doxygen-awesome-css/*
+
+USE_MDFILE_AS_MAINPAGE = README.md
+PROJECT_LOGO           = assets/logo.png