Update test.yml to latest from original hello_foundry repo

Author: portdeveloper

.github/workflows/test.yml

@@ -1,6 +1,9 @@
-name: test
+name: CI
 
-on: workflow_dispatch
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
 
 env:
   FOUNDRY_PROFILE: ci
@@ -19,12 +22,18 @@ jobs:
 
       - name: Install Foundry
         uses: foundry-rs/foundry-toolchain@v1
-        with:
-          version: nightly
 
-      - name: Run Forge build
+      - name: Show Forge version
         run: |
           forge --version
+
+      - name: Run Forge fmt
+        run: |
+          forge fmt --check
+        id: fmt
+
+      - name: Run Forge build
+        run: |
           forge build --sizes
         id: build