Adds basic CI on GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,25 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version:
+          - 18.x
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: yarn install --frozen-lockfile
+      - run: yarn lint .
+      - run: yarn test run
+      - run: yarn build

README.md

@@ -1,5 +1,7 @@
 # Tiles Game
 
+[![CI status](https://github.com/baldoalessandro/tiles_game/workflows/ci.yml/badge.svg)](https://github.com/baldoalessandro/tiles_games/actions)
+
 A clone of NYT Tiles game in SolidJS
 
 ## TODO