Add deploy wasm workflow for rv32emu

rv32emu's wasm build relies on the artifacts in this repository, so any
new release in this repository should trigger the new WASM deployment
to rv32emu-demo.

Author: ChinYikMing

.github/workflows/main.yml

@@ -0,0 +1,20 @@
+name: Trigger wasm deploy event in rv32emu upon releasing
+
+on:
+  workflow_dispatch:
+  release:
+    types:
+      - published
+
+jobs:
+  deploy-wasm-dispatch:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Trigger wasm deploy event
+        run: |
+          curl -X POST \
+            -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${{ secrets.RV32EMU_WORKFLOW_TOKEN }}" \
+            https://api.github.com/repos/sysprog21/rv32emu/dispatches \
+            -d '{"event_type": "deploy_wasm"}'