ci: First workflow

Adding the first workflow to the project. It includes building examples
and running tests.

Signed-off-by: Tomasz Leman <tomasz.leman@outlook.com>

.github/workflows/ubuntu_22_04-gcc-c++11.yml

@@ -0,0 +1,29 @@
+name: Build on Ubuntu 22.04 with GCC (c++11)
+
+on:
+  pull_request:
+    branches: [ "main" ]
+
+  env:
+    BUILD_TYPE: Debug
+
+  jobs:
+    build:
+      runs-on: ubuntu-22.04
+
+      steps:
+        - uses: actions/checkout@v3
+
+        - name: Configure CMake
+          run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+
+        - name: Build Examples
+          run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} --target all_examples
+
+        - name: Build Tests
+          run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}} --target all_tests
+
+        - name: Test
+          working-directory: ${{github.workspace}}/build
+          run: ctest -C ${{env.BUILD_TYPE}}
+