chore(build): add pr workflow

.github/workflows/pr.yml

@@ -0,0 +1,50 @@
+name: PR
+
+on: pull_request
+
+jobs:
+  build:
+    name: ${{ matrix.config.name }}
+    runs-on: ${{ matrix.config.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - name: Ubuntu Latest (GCC)
+            os: ubuntu-latest
+            build_type: Release
+            test_path: TempestTest
+            cc: gcc
+            cxx: g++
+
+          - name: macOS Latest (Clang)
+            os: macos-latest
+            build_type: Release
+            test_path: TempestTest
+            cc: clang
+            cxx: clang++
+
+          - name: Windows Latest (MSVC)
+            os: windows-latest
+            build_type: Release
+            test_path: Release/TempestTest
+            cc: cl
+            cxx: cl
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+
+      - name: Prepare
+        run: mkdir build
+
+      - name: Configure
+        run: cd build && cmake .. -DCMAKE_BUILD_TYPE=${{ matrix.config.build_type }}
+
+      - name: Build
+        run: cmake --build build --config ${{ matrix.config.build_type }}
+
+      - name: Test
+        run: ./build/test/${{ matrix.config.test_path }}