Add basic CI workflow

Author: NiklasEi

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+    push:
+        branches: [main]
+    pull_request:
+        branches: [main]
+
+jobs:
+    lint-and-build:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v6
+
+            - uses: actions/setup-node@v5
+              with:
+                  node-version: 22
+                  cache: npm
+
+            - run: npm ci
+
+            - name: Lint
+              run: npm run lint
+
+            - name: Type check & build
+              run: npm run build