[CI] Test SwiftWasm

https://swiftwasm.org/

Author: ikesyo

.github/workflows/wasm.yml

@@ -0,0 +1,17 @@
+name: SwiftWasm
+
+on:
+  pull_request:
+    paths:
+      - .github/workflows/wasm.yml
+  schedule:
+    - cron: "0 0 * * 1"
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Test SwiftWasm
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: swiftwasm/[email protected]