add linux gcc test ci

.github/workflows/linux_gcc.yml

@@ -0,0 +1,36 @@
+name: Ubuntu 22.04 (gcc)
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build_by_gcc:
+    strategy:
+      matrix:
+        mode: [Debug, Release]
+        ssl: [OFF]
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Dependencies
+        run: |
+          sudo apt-get install openssl
+          sudo apt-get install libssl-dev
+
+      - name: Configure CMake
+        run: CXX=g++ CC=gcc cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{matrix.mode}} -DCINATRA_ENABLE_SSL=${{matrix.ssl}}
+
+      - name: Build
+        run: cmake --build ${{github.workspace}}/build --config ${{matrix.mode}}
+
+      - name: Test
+        working-directory: ${{github.workspace}}/build
+        run: ctest -C ${{matrix.mode}} -j `nproc` -V