Create CI build script

.drone.yml

@@ -0,0 +1,37 @@
+kind: pipeline
+type: docker
+
+# Check if the game builds
+# If yes, test if everything is nice
+# If yes, deploy to vercel
+
+steps:
+- name: build-game
+  image: node
+  commands:
+  - yarn build:game
+- name: build-pwa
+  image: node
+  commands:
+  - yarn build:pwa
+- name: test
+  image: node
+  commands:
+  - yarn test
+  depends_on:
+  - build-game
+  - build-pwa
+- name: deploy (production)
+  image: dockette/vercel
+  commands:
+  - vercel -t $VERCEL_TOKEN --scope $VERCEL_SCOPE -c
+  when:
+    branch:
+    - main
+- name: deploy (preview)
+  image: dockette/vercel
+  commands:
+  - vercel -t $VERCEL_TOKEN --scope $VERCEL_SCOPE -c
+  when:
+    branch:
+    - "!main"