ci: add github ci

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: Build
+on: [push, pull_request]
+env:
+  zig_version: 0.12.0
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        #os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest]
+    runs-on: ${{matrix.os}}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: goto-bus-stop/setup-zig@v2
+        with:
+          version: ${{ env.zig_version }}
+      # Ubuntu-specific bit
+      - run: sudo apt-get update -qq
+      - run: sudo apt-get install -y libsdl2-dev
+      - run: zig build
+      - run: zig build test
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: goto-bus-stop/setup-zig@v2
+        with:
+          version: ${{ env.zig_version }}
+      - run: zig fmt --check src/*.zig