Added config files for Doxygen

.github/workflows/doxygen-build.yml

@@ -0,0 +1,52 @@
+name: "Doxygen Build"
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+      - rel-*
+    paths:
+      - src/**
+  pull_request:
+jobs:
+  build:
+    name: Generate API docs
+    runs-on: [ "self-hosted", "1ES.Pool=onnxruntime-genai-Ubuntu2204-AMD-CPU" ]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install doxygen and dependencies
+        run: |
+          sudo apt update
+          sudo apt-get install libclang-dev
+          sudo apt-get install libclang-cpp14
+          wget https://www.doxygen.nl/files/doxygen-1.9.8.linux.bin.tar.gz
+          tar xvzf doxygen-1.9.8.linux.bin.tar.gz
+
+      - name: Run C/C++ doxygen
+        run: |
+          cd src/
+          ../doxygen-1.9.8/bin/doxygen Doxyfile
+
+      - name: Run CSharp doxygen
+        run: |
+          cd src/csharp/
+          ../../doxygen-1.9.8/bin/doxygen Doxyfile_csharp.cfg
+
+      - name: Run Java doxygen
+        run: |
+          cd src/java/
+          ../../doxygen-1.9.8/bin/doxygen Doxyfile_java.cfg
+
+      - name: Run Objective-C doxygen
+        run: |
+          cd src/objectivec/
+          ../../doxygen-1.9.8/bin/doxygen Doxyfile_objc.cfg
+
+      - name: Run API diff
+        run: |
+          python -m pip install -U jsonpickle
+          python ./tools/ci_build/validate_doxygen_xml.py \
+            --cxx-output-dir ./src/cxx_dox \
+            --java-output-dir ./src/java/java_dox \
+            --csharp-output-dir ./src/csharp/csharp_dox \
+            --objc-output-dir ./src/objectivec/objc_dox