Add GitHub workflow

.github/workflows/workflow.yml

+on: push
+name: CI
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Install
+        uses: CultureHQ/actions-yarn@master
+        with:
+          args: install
+      - name: Lint
+        uses: CultureHQ/actions-yarn@master
+        with:
+          args: lint
+      - name: Type-Check
+        uses: CultureHQ/actions-yarn@master
+        with:
+          args: type-check
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Install
+        uses: CultureHQ/actions-yarn@master
+        with:
+          args: install
+      - name: Test
+        uses: CultureHQ/actions-yarn@master
+        with:
+          args: test