ci: Add linting/tests to CI

.github/workflows/checks.yml

@@ -0,0 +1,23 @@
+name: "Standard Checks"
+
+on:
+  push:
+    branches: ["master", "ci"]
+
+jobs:
+  check:
+    timeout-minutes: 10
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: yarn
+      - name: Check lint rules
+        run: yarn lint
+      - name: Run JavaScript Tests
+        run: yarn test
+      - name: Run Android Tests
+        run: |
+          cd android
+          ./gradlew test
+