ci: initialize basic on-push jobs

Author: DISTREAT

.github/workflows/ci.yaml

@@ -0,0 +1,25 @@
+name: CI
+on: [push]
+jobs:
+  zig:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: mlugg/setup-zig@v1
+        with:
+          version: 0.14.0-dev.2628+5b5c60f43
+  test:
+    runs-on: ubuntu-latest
+    needs: zig
+    steps:
+      - run: zig build test
+  lint:
+    runs-on: ubuntu-latest
+    needs: zig
+    steps:
+      - run: zig fmt --check .
+  docs:
+    runs-on: ubuntu-latest
+    needs: zig
+    steps:
+      - run: zig build docs