feat(ci): add mingw tests

.github/workflows/build.yml

@@ -29,6 +29,28 @@ jobs:
       - name: Run Tests
         run: "./build/tests/lime-tests"
 
+  test-mingw:
+    runs-on: ubuntu-latest
+    container: archlinux:base-devel
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ["cpp"]
+        arch: ["x86", "x64"]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install build dependencies
+        run: "pacman --noconfirm -Syu cmake gcc git make mingw-w64"
+
+      - name: Compile
+        run: |
+          cmake -B build -Dlime_tests=ON -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-${{ matrix.arch }}.cmake
+          cmake --build build
+
   test-windows-clang:
     runs-on: windows-latest
     strategy: